US8249865B2 - Adaptive data transmission for a digital in-band modem operating over a voice channel - Google Patents

Adaptive data transmission for a digital in-band modem operating over a voice channel Download PDF

Info

Publication number
US8249865B2
US8249865B2 US12/904,093 US90409310A US8249865B2 US 8249865 B2 US8249865 B2 US 8249865B2 US 90409310 A US90409310 A US 90409310A US 8249865 B2 US8249865 B2 US 8249865B2
Authority
US
United States
Prior art keywords
voice channel
encoding
preset threshold
wireless voice
audio signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US12/904,093
Other languages
English (en)
Other versions
US20110125488A1 (en
Inventor
Kiley Birmingham
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Karma Automotive LLC
Original Assignee
Airbiquity Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Airbiquity Inc filed Critical Airbiquity Inc
Priority to US12/904,093 priority Critical patent/US8249865B2/en
Assigned to AIRBIQUITY INC. reassignment AIRBIQUITY INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BIRMINGHAM, KILEY
Priority to TW099136455A priority patent/TWI357741B/zh
Publication of US20110125488A1 publication Critical patent/US20110125488A1/en
Application granted granted Critical
Publication of US8249865B2 publication Critical patent/US8249865B2/en
Assigned to ORIX VENTURES, LLC reassignment ORIX VENTURES, LLC SECURITY INTEREST Assignors: AIRBIQUITY INC.
Assigned to SILICON VALLEY BANK reassignment SILICON VALLEY BANK SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AIRBIQUITY INC.
Assigned to AIRBIQUITY INC. reassignment AIRBIQUITY INC. RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: SILICON VALLEY BANK
Assigned to KARMA AUTOMOTIVE, LLC reassignment KARMA AUTOMOTIVE, LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AIRBIQUITY, INC.
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems

Definitions

  • Wireless telecommunication coverage has become nearly ubiquitous in much of the world, especially in industrialized countries. In some developing countries as well, whole regions that lack traditional copper-wired telecom infrastructure have skipped over that technology to deploy wireless instead.
  • Modern wireless networks provide a range of voice and data services. Technical details of those services can be found in many places, for example, the 3GPP standards group web site www.3gpp.org.
  • SMS short message service
  • Wireless voice services tend to be of generally good quality and are available almost everywhere people travel. Therefore, voice services are a good choice where reliable, broad coverage is important, for example in the implementation of emergency services, such as requests for police, fire, medical or other emergency services.
  • emergency services such as requests for police, fire, medical or other emergency services.
  • voice channels although optimized for efficient transmission of actual human voice traffic, in fact can be used to transmit relatively small amounts of data as well (e.g., tens or hundreds of bits, rather than megabits.)
  • Voice channels are characterized by special performance characteristics. For example, only a relatively narrow range of audio frequencies needs to be transceived, based on the normal human voice.
  • sophisticated compression and coding techniques are known to enable sending and receiving human voice very efficiently over digital wireless networks.
  • these voice coders or “vocoders” typically implemented in software, DSP chips and the like—do not transmit non-voice sounds well at all. To the contrary, they are carefully designed to filter out non-voice signals.
  • FIG. 1 is a simplified block diagram illustrating the typical speech path for a wireless voice call; i.e., a telephone call over the wireless telecommunications network.
  • Analog voice signals from a microphone are digitized by an A/D converter, and then fed to a vocoder encoding algorithm (at 8000 samples/sec).
  • the encoder produces packets of compressed data (typically one packet per 20-ms frame of audio) and feeds this data stream to a radio transceiver.
  • a radio receiver passes the packets to the decoding algorithm, which then reconstructs (imperfectly) the original voice signal as a PCM stream. This PCM stream is eventually converted back into an analog voltage which is then applied to a speaker.
  • an input receives digital data.
  • An encoder converts the digital data into audio tones that synthesize frequency characteristics of human speech.
  • the digital data is also encoded to prevent voice encoding circuitry in the telecommunications network from corrupting the synthesized audio tones representing the digital data.
  • An output then outputs the synthesized audio tones to a voice channel of a digital wireless telecommunications network.
  • the data carrying “tones” are sent along with simultaneous voice.
  • the tones can be made short and relatively unobtrusive.
  • the voice is cut off while data is transmitted through the voice channel.
  • portions of the audio frequency spectrum are used for voice, while other portions are reserved for data. This aides in decoding at the receiving side.
  • FIG. 2 is a simplified block diagram of an illustrative In-Vehicle System (IVS). It shows an example of the relevant portion of a typical telematics client system.
  • IVS In-Vehicle System
  • This client system consists of embedded hardware and software designed to operate in an automobile environment.
  • the telematics software includes a “customer application,” which may be almost any application, in particular one that employs data transfer via the wireless network.
  • the customer application may relate to navigation or entertainment.
  • the customer application conveys data (preferably data packets) to an in-band signaling modem.
  • the in-band modem converts the data (along with packet headers and other overhead as appropriate) into audio tones.
  • the audio “data tones” are encoded, much like voice content, and transmitted to a remote receiver.
  • errors can occur in the process of in-band signaling.
  • the receiver will attempt to recover data packets from the transmitted data tones, but the recovery process could fail or the recovered packets could be incorrect representations of the original packets.
  • schemes available to conduct a re-transmission from the transmit side in the event of an error, as well as schemes to correct errors on the receive side, what is needed is a scheme to reduce the number of errors to be resolved by the re-transmission and/or error correction schemes. The disclosure that follows solves this and other problems.
  • a mobile device encodes a digital bitstream using a particular set of modulation parameters to generate an audio signal that has different audio tones selected to pass through a vocoder of the mobile device.
  • the particular set of modulation parameters is optimized for a subset of a plurality of vocoding modes without a priori knowledge of which one of the vocoding modes is currently operated by the vocoder.
  • the mobile device conducts transmissions over the wireless telecommunications network through the vocoder using the particular set of modulation parameters, and monitors these transmissions for errors.
  • the vocoder may be using one of the vocoding modes that are not included in the subset for which the particular set of modulation parameters is optimized, and accordingly, the modulation device switches from the particular set of modulation parameters to a different set of modulation parameters.
  • FIG. 1 is a simplified block diagram illustrating the typical speech path for a wireless voice call.
  • FIG. 2 is a simplified block diagram of an illustrative In-Vehicle System (IVS) with an embedded mobile phone module.
  • IVS In-Vehicle System
  • FIG. 3A illustrates an In-Band Signaling (MS) modem configured to switch between modulation parameter sets.
  • MS In-Band Signaling
  • FIG. 3B illustrates a flow chart showing operation of the MS modem of FIG. 1 .
  • FIG. 4 illustrates a signaling diagram showing how the IBS modem shown in FIG. 1 can determine when to switch between modulation parameter sets.
  • FIG. 5A illustrates a signaling diagram showing how an MS modem on the receiving side can determine when to switch between modulation parameter sets and signal the IBS modem of FIG. 1 .
  • FIG. 5B is a flow chart illustrating error counting on the receiver side.
  • FIG. 3A illustrates an In-Band Signaling (IBS) modem configured to switch between modulation parameter sets.
  • IBS In-Band Signaling
  • the system 100 includes an In-Band Signaling ( 113 S) modem 4 of a mobile device (also referred to as a “client”) to communicate with a remote IBS modem such as an IBS modem of a server (not shown).
  • the IBS modem 4 is configured to modulate packet data using a first set of modulation parameters 8 .
  • the software 15 of the IBS modem 4 monitors for errors associated with transmission to the remote IBS modem (not shown) over the wireless voice channel 13 and, according to said error monitoring, controls whether the system 100 (including the IBS modem 4 ) “falls back” to a second set of modulation parameters 9 during transmission.
  • the vocoders such as vocoder 5 process voice data according to a vocoding algorithm, or vocoding codec, configured thereon.
  • vocoding algorithms There are many known vocoding algorithms and the vocoders do not always reveal which particular vocoding algorithm they use.
  • some vocoders such as the illustrated vocoder 5 are configured with a plurality of vocoding algorithms and will dynamically switch between which vocoding algorithm is currently utilized at any time for reasons that are outside the scope of this discussion (such dynamic switching may not necessarily be advertised by the vocoder either).
  • the modulation of packet data by an IBS modem into an audio signal 10 is to get the information of the packet data into a form that will not be filtered out by vocoders of the wireless voice channel.
  • different vocoding algorithms process inputs in different ways, and in some cases so differently that a modulation scheme that can pass information sufficiently accurately through one vocoding algorithm will not pass information sufficiently accurately through another vocoding algorithm.
  • the IBS modem 4 is configured with at least two sets of modulation parameters, e.g. 8 and 9 , which each represent a modulation scheme.
  • the modulation schemes can differ in one or more of the following parameters: modulation frequency, symbol waveform length, synchronization pattern length, or full/half duplex transmission.
  • One of the modulation schemes 8 and 9 is optimized for use with a subset of known vocoding algorithms, meaning that this modulation scheme will typically be able to pass information through the vocoding algorithms of the subset at high performance, but not necessarily through other vocoding algorithms
  • Another one of the modulation schemes 8 and 9 is either optimized with a different subset of known vocoding algorithms, or not optimized with any particular vocoding algorithms (characterized by wide compatibility with vocoding algorithms at a lower performance).
  • the IBS modem 4 utilizes a particular one of the modulation schemes 8 and 9 in a “default mode” without analyzing which particular vocoding scheme is currently used by the vocoder 5 .
  • the high performance modulation scheme that is optimized for a subset of the vocoding algorithms 1 -N is used initially for transmission.
  • the use of this particular modulation scheme can be referred to as “a priori” because the IBS modem 4 does not have actual information as to which one of the vocoding algorithms 1 -N (or for that matter which one of any known vocoding algorithms) the vocoder 5 is currently using.
  • the software 15 then continuously monitors transmission utilizing the particular one of the modulation schemes 8 and 9 . In other words, actual error monitoring information 19 is fed back to the software 15 . If the error monitoring information 19 indicates that a threshold amount of errors has been reached, the software 15 causes the IBS modem 4 to switch modulation schemes, which is represented logically in FIG. 3 by the control signal 17 . In the particular example shown, the IBS modem 4 “falls back” to a modulation scheme that has one or more of the following parameters with respect to the default modulation scheme: different modulation frequency, greater symbol waveform length, greater synchronization pattern length, and half duplex transmission instead of full duplex transmission. Changing modulation frequency can prevent data from being filtered out by the utilized vocoding algorithm.
  • a modulation scheme with a greater symbol waveform length supplies more waveform information to the receiver for the purposes of identifying the transmitted symbol, and such symbols are typically more likely to be recovered correctly in a “bad channel” environment, e.g. a vocoder using a vocoding scheme that is hostile to packet data.
  • the symbols are four times longer than in another modulation scheme.
  • a modulation scheme with a greater synchronization pattern length uses longer synchronization patterns to signal the remote IBS modem of the start of a payload, which is less likely to result in false or missed detections on the receive side in a “bad channel” environment. Using half duplex can avoid cross-talk between the IBS modems.
  • a first one of the modulation schemes has a data symbol rate of 400 baud with modulation frequencies F 1 /F 2 and F 3 /F 4 for the transmitter and receiver, respectively. Since the transmitter and receiver sides use different frequencies, there is no (or minimal) interference between the waveforms despite the temporal overlap, and full-duplex operation is possible.
  • a second fallback one of the modulation schemes has a data symbol rate of 100 baud with a symbol length four times that of the first modulation scheme.
  • the modulation frequencies are F 1 /F 2 for both the transmitter and the receiver, and half duplex transmission mode is used.
  • the second fallback modulation scheme does not use the F 3 /F 4 modulation frequencies as the 4.8 kbps EVRC-B vocoding algorithm suppresses these modulation frequencies.
  • the IBS modem 4 If the IBS modem 4 does switch from a default modulation scheme to a fallback modulation scheme, the IBS modem 4 in turn signals the remote IBS modem to begin demodulating according to the fallback modulation scheme.
  • the more robust fallback modulation scheme can also addresses errors attributable to conditions of the wireless voice channel medium, e.g. dropped calls and lost packets, and/or errors attributable to another network such as a circuit switched medium.
  • the software 15 can also be configured to switch back to the default modulation scheme after utilizing the fallback modulation scheme for some period of time. For example, the software 15 could automatically switch back if a threshold minimum of errors are observed over a preset period of time.
  • vocoders typically do not reveal which particular vocoding algorithm they use.
  • “hostile” vocoders e.g. vocoders that aggressively filter out non-speech data, which have characteristics revealing their vocoding algorithm.
  • One particular example is the 4.8 kbps EVRC-B vocoding algorithm used by some vocoders.
  • the IBS modem 4 can be configured to, when paired with a vocoder using these particular vocoding schemes, initially modulate the digital bitstream using the fallback modulation scheme.
  • a bad channel can be declared immediately, and as a result the IBS modem 4 modulates the initial portion of the digital bitstream 2 using the fallback modulation scheme.
  • the modulation scheme described above can utilize a frequency modulation scheme such as Frequency-Shift Keying (FSK) modulation. If a frequency modulation scheme is used, information can be encoded with a selected pair of frequencies, or encoded with a larger set of frequencies, i.e. sets of more than two frequencies. It should be apparent that the principles described above can be applied to other modulation schemes, such as those where information is encoded using other signal characteristics including but not limited to phase or amplitude of the carrier frequency.
  • FSK Frequency-Shift Keying
  • FIG. 3B illustrates a flow chart showing operation of the IBS modem of FIG. 1 .
  • the IBS modem 4 attempts to identify a vocoding algorithm currently used by the vocoder. If a vocoding algorithm is identified in diamond 302 , then in block 303 A the IBS modem 4 selects between a first modulation scheme and a second fallback modulation scheme according to the identification. Otherwise, in block 303 B the IBS modem 4 modulates an initial portion of a digital bitstream using the first modulation scheme to generate an audio signal that has different audio tones for different bit values, wherein the audio tones are selected to pass through a wireless voice channel of the wireless telecommunication network unobstructed by the vocoder.
  • the IBS modem 4 monitors transmissions over the wireless telecommunications network. Examples of such monitoring will be discussed later in greater detail with respect to FIGS. 4 and 5 A-B. If errors are less than a preset threshold in diamond 305 , then in block 306 A the IBS modem 4 modulates a subsequent portion of the digital bitstream using the first modulation scheme. If errors reach the preset threshold in diamond 305 , then in block 306 B the IBS modem 4 modulates a subsequent portion of the digital bitstream using the second fallback modulation scheme. As discussed previously, as compared to the first modulation scheme, the second fallback modulation scheme has at least one of different modulation frequency, greater symbol waveform length, greater synchronization pattern length, and half duplex transmission instead of full duplex transmission.
  • FIG. 4 illustrates a signaling diagram showing how the IBS modem shown in FIG. 1 can determine when to switch between modulation parameter sets.
  • a transmitting IBS modem determines when to switch between modulation schemes based on counting non-acknowledgements.
  • Non-acknowledgements include negative acknowledgements as shown in this particular illustration and any other indication of a transmission error such as a failure to receive a positive acknowledgement within a preset amount of time.
  • the transmitting IBS modem modulates a first packet using a first modulation scheme and transmits the modulated packet. For purposes of illustration, assume that the modulated packet is successfully recovered and an acknowledgement is received back at the transmitting IBS modem.
  • the transmitting IBS modem modulates a second packet using the first modulation scheme. For purposes of illustration, assume that the modulated packet is not successfully recovered.
  • the receiving IBS modem sends a negative acknowledgement, which as discussed previously is a type of non-acknowledgement.
  • the transmitting IBS modem increments a counter for non-acknowledgements.
  • the transmitting modem then re-transmits the second packet modulated using the first modulation scheme.
  • the counter continues to increment on the transmitting IBS.
  • a preset threshold of errors a bad channel is declared and subsequent transmissions are made using the second fallback modulation scheme.
  • the threshold is reached while still attempting to communicate the second packet, so the second packet is modulated according to the second fallback modulation scheme and then transmitted. It should be understood that hysteresis can be used in counting to avoid premature switchover to the second fallback modulation scheme.
  • the transmitting IBS modem also signals the receiving IBS modem to switch modulation schemes. It is preferable to send such signaling using the second fallback modulation scheme.
  • the receiving IBS modem is configured to demodulate signaling sent with the second fallback modulation scheme even when operating on packet data using the first modulation scheme.
  • the transmitting IBS modem can wait to initiate modulation according to the second fallback modulation scheme until the receiving IBS modem positively indicates that the receiving IBS modem has begun operating in fallback modem.
  • the server performs the functions of the transmitting IBS modem.
  • the mobile client performs the functions of the transmitting IBS modem.
  • the transmitting IBS modem can initiate switchover back to the first modulation scheme.
  • the switchover back to the first modulation scheme can occur automatically after the passage of a preset amount of time, or after the passage of the preset amount of time but only if less a particular amount of errors were detected in that time, etc. If the errors were resulting from temporarily problems with the wireless telecommunications network medium, it is possible that transmission using the first modulation scheme can be relatively error free at that time. Also, if the errors were resulting from a temporary use of a particular vocoding algorithm by a vocoder along the call path, it is possible that transmission using the first modulation scheme can be relatively error free at that time.
  • FIG. 5A illustrates a signaling diagram showing how an IBS modem on the receiving side can determine when to switch between modulation parameter sets and signal the IBS modem of FIG. 1 .
  • a receiving IBS modem determines when to switch between modulation schemes based on counting errors detected using Cyclic Redundancy Check (CRC) error detecting or some other form of error detection.
  • CRC Cyclic Redundancy Check
  • the receiving IBS modem receives a first packet modulated according to a first modulation scheme.
  • the receiving IBS modem then performs a CRC on the recovered data of the first packet. For purposes of illustration, it is assumed that no errors are identified during this CRC.
  • the receiving IBS modem may send an acknowledgement that the first packet was successfully recovered.
  • the receiving IBS modem then performs a CRC on a second packet modulated according to the first modulation scheme. For purposes of illustration, it is assumed that this CRC identifies errors.
  • the receiving IBS modem then updates a counter.
  • the receiving IBS modem may send a negative acknowledgement.
  • the counter continues to increment on the transmitting IBS. After the counter reaches a preset threshold of errors, a bad channel is declared. It should be understood that hysteresis can be used in counting to avoid premature switchover to the second fallback modulation scheme.
  • the receiving IBS modem then sends a request to switch modulation schemes, causing the transmitting modem to re-transmit a packet using the second fallback modulation scheme (or begin sending not yet transmitted packets using the fallback modulation scheme).
  • the request itself is modulated according to the second fallback modulation scheme.
  • the transmitting IBS modem is configured to demodulate signaling sent with the second fallback modulation scheme even when operating on packet data using the first modulation scheme.
  • FIG. 5B is a flow chart illustrating error counting on the receiver side.
  • the Forward Error Correction (FEC) parity bits are used to correct the packet data before the CRC calculation is performed. It should be apparent that any form of error correction can be performed before conducting the CRC or other error detection process. The error detection can be performed on the header, the payload (marked “data” in the figure), or both.
  • FEC Forward Error Correction
  • the counter may be incremented once for each erroneous segment (a segment is combination of a header and a payload that corresponds to a portion of a packet).
  • a processor readable medium is encoded with specialized instructions that, if executed, result particular operations.
  • One operation includes processing a received digital bitstream using a particular modulation parameter set to generate an audio signal that has different audio tones for different bit values, wherein the audio tones are selected to pass through a wireless voice channel of a wireless telecommunication network unobstructed by a vocoder, and wherein the particular modulation parameter set is optimized for a subset of a plurality of vocoding modes without a priori knowledge of which one of the plurality of vocoding modes is currently operated by the vocoder for vocoding the audio signal.
  • Another operation includes monitoring transmissions over the wireless telecommunications network to identify when an amount of errors associated with transmission over the wireless voice channel reaches a preset threshold. Another operation includes switching from the particular modulation parameter set to a different modulation parameter set if the monitoring indicates the error amount reaching the preset threshold. In some cases, at least some of the errors result from the vocoder operating a vocoding mode that is not included in the subset to which the particular modulation parameter set is optimized in association with the erroneous transmission.
  • the different modulation parameter set can be designed for wider compatibility than the particular modulation parameter set, and wherein the different modulation parameter set is non-optimized with said subset of vocoding modes and/or optimized with a different subset of vocoding modes.
  • Another operation can include, if the monitoring indicates the error amount reaching the preset threshold, transitioning from encoding using a first symbol type to encoding using a second symbol type having a greater duration than the first symbol type.
  • Another operation can include, if the monitoring indicates the error amount reaching the preset threshold, transitioning from encoding using a first frequency pair to encoding using a second lower frequency pair, wherein the first higher frequency pair is used with the erroneous transmissions.
  • Another operation can include, if the monitoring indicates the error amount reaching the preset threshold, encoding into the audio signal a first pattern, wherein the first pattern supplies more waveform information for the receiver to use in identifying a symbol than a second pattern encoded into the audio signal before the erroneous transmission is identified.
  • Another operation can include, if the monitoring indicates the error amount reaching the preset threshold, transitioning from encoding using a first symbol type to encoding using a second symbol type having a greater duration than the first symbol type, transitioning from encoding using a first frequency set to encoding using a second different frequency set, and encoding into the audio signal a first pattern, wherein the first pattern supplies more waveform information for the receiver to use in identifying a symbol than a second pattern encoded into the audio signal before the erroneous transmission is identified.
  • Another operation can include, if the monitoring indicates the error amount reaching the preset threshold, switching from a full-duplex transmission mode to a half-duplex transmission mode.
  • Another operation can include counting a number of non-acknowledgements, wherein the switching is based on said counting.
  • Another operation can include processing signaling generated by a receiving endpoint, wherein the switching is based on said signaling.
  • a particular process includes processing a received digital bitstream using a particular modulation parameter set to generate a audio signal that has different audio tones for different bit values, wherein the audio tones are selected to pass through a wireless voice channel of a wireless telecommunication network unobstructed by a vocoder, wherein the particular modulation parameter set is optimized for a subset of a plurality of vocoding modes without a priori knowledge of which one of the plurality of vocoding modes is currently operated by the vocoder for vocoding the audio signal.
  • Another step in the process includes feeding back actual error information from a demodulation endpoint for the transmissions.
  • Another step in the process includes switching from the particular modulation parameter set to a different modulation parameter set when the fed back error information indicates errors reaching a preset threshold.
  • the different modulation parameter set is non-optimized with said subset of vocoding modes and/or optimized with a different subset of vocoding modes.
  • Another step in the process includes transitioning from encoding using a first symbol type to encoding using a second symbol type having a greater duration than the first symbol type when the fed back error information indicates errors reaching the preset threshold.
  • Another step in the process includes transitioning from encoding using a first frequency set to encoding using a second lower frequency set when the fed back error information indicates errors reaching a preset threshold, wherein the first higher frequency set is used with the erroneous transmissions.
  • Another step in the process includes encoding into the audio signal a first pattern, wherein the first pattern supplies more waveform information for the receiver to use in identifying a symbol than a second pattern encoded into the audio signal before the preset threshold is reached.
  • a processor readable medium is encoded with specialized instructions that, if executed, result particular operations.
  • One operation includes determining whether a vocoder is currently operating a particular one or ones of a plurality of vocoding modes.
  • Another operation includes processing a received digital bitstream using a particular modulation parameter set to generate a audio signal that has different audio tones for different bit values, wherein the audio tones are selected to pass through a wireless voice channel of a wireless telecommunication network unobstructed by the vocoder; wherein if the determination indicates that the vocoder is currently operating the particular one or ones of a plurality of vocoding modes, the particular modulation parameter set has a first set of parameters, and wherein otherwise the particular modulation parameter set has a second different set of parameters.
  • Another operation includes monitoring transmissions over the wireless telecommunications network to identify when an amount of errors associated with transmission over the wireless voice channel reaches a preset threshold. Another operation includes, if the monitoring indicates the error amount reaching the preset threshold, adapting processing of the received digital bit stream.
  • Another operation includes, if the monitoring indicates the error amount reaching the preset threshold, transitioning from encoding using a first symbol type to encoding using a second symbol type having a greater duration than the first symbol type.
  • Another operation includes, if the monitoring indicates the error amount reaching the preset threshold, transitioning from encoding using a first frequency set to encoding using a second lower frequency set.
  • Another operation includes, if the monitoring indicates the error amount reaching the preset threshold, encoding into the audio signal a first pattern, wherein the first pattern supplies more waveform information for the receiver to use in identifying a symbol than a second bit length encoded into the audio signal before the erroneous transmission is identified.
  • Another operation includes counting a number of non-acknowledgements or processing signaling generated by a receiving endpoint, wherein the adapting is based on said counting or said signaling
  • the typical navigation device is likely to include one or more processors and software executable on those processors to carry out the operations described.
  • software herein in its commonly understood sense to refer to programs or routines (subroutines, objects, plug-ins, etc.), as well as data, usable by a machine or processor.
  • computer programs generally comprise instructions that are stored in machine-readable or computer-readable storage media.
  • Some embodiments of the present invention may include executable programs or instructions that are stored in machine-readable or computer-readable storage media, such as a digital memory.
  • a “computer” in the conventional sense is required in any particular embodiment.
  • various processors, embedded or otherwise may be used in equipment such as the components described herein.
  • memory associated with a given processor may be stored in the same physical device as the processor (“on-board” memory); for example, RAM or FLASH memory disposed within an integrated circuit microprocessor or the like.
  • the memory comprises an independent device, such as an external disk drive, storage array, or portable FLASH key fob.
  • the memory becomes “associated” with the digital processor when the two are operatively coupled together, or in communication with each other, for example by an I/O port, network connection, etc. such that the processor can read a file stored on the memory.
  • Associated memory may be “read only” by design (ROM) or by virtue of permission settings, or not.
  • a “software product” refers to a memory device in which a series of executable instructions are stored in a machine-readable form so that a suitable machine or processor, with appropriate access to the software product, can execute the instructions to carry out a process implemented by the instructions.
  • Software products are sometimes used to distribute software. Any type of machine-readable memory, including without limitation those summarized above, may be used to make a software product. That said, it is also known that software can be distributed via electronic transmission (“download”), in which case there typically will be a corresponding software product at the transmitting end of the transmission, or the receiving end, or both.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Telephone Function (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Communication Control (AREA)
  • Telephonic Communication Services (AREA)
US12/904,093 2009-11-23 2010-10-13 Adaptive data transmission for a digital in-band modem operating over a voice channel Expired - Fee Related US8249865B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/904,093 US8249865B2 (en) 2009-11-23 2010-10-13 Adaptive data transmission for a digital in-band modem operating over a voice channel
TW099136455A TWI357741B (en) 2009-11-23 2010-10-26 Adaptive data transmission for a digital in-band m

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US26367209P 2009-11-23 2009-11-23
US12/904,093 US8249865B2 (en) 2009-11-23 2010-10-13 Adaptive data transmission for a digital in-band modem operating over a voice channel

Publications (2)

Publication Number Publication Date
US20110125488A1 US20110125488A1 (en) 2011-05-26
US8249865B2 true US8249865B2 (en) 2012-08-21

Family

ID=43499995

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/904,093 Expired - Fee Related US8249865B2 (en) 2009-11-23 2010-10-13 Adaptive data transmission for a digital in-band modem operating over a voice channel

Country Status (11)

Country Link
US (1) US8249865B2 (pt)
EP (1) EP2504942B1 (pt)
JP (1) JP5709887B2 (pt)
KR (1) KR20120101082A (pt)
CN (1) CN102792625B (pt)
AU (1) AU2010322322B2 (pt)
BR (1) BR112012009888A2 (pt)
CA (1) CA2778056A1 (pt)
MX (1) MX2012005702A (pt)
TW (1) TWI357741B (pt)
WO (1) WO2011062715A1 (pt)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8848825B2 (en) 2011-09-22 2014-09-30 Airbiquity Inc. Echo cancellation in wireless inband signaling modem
US20150172073A1 (en) * 2012-02-22 2015-06-18 Texas Instruments Incorporated Transmission of Segmented Frames in Power Line Communication
US9337958B2 (en) * 2014-02-21 2016-05-10 Sogics Corporation Limited Data transmissions over a voice channel
US20180352434A1 (en) * 2017-06-05 2018-12-06 Renesas Electronics Corporation Wireless communication system, beacon device, information processing terminal, and beacon device authentication method
US11973548B2 (en) 2022-02-03 2024-04-30 T-Mobile Usa, Inc. Adjusting a configuration of a wireless telecommunication network

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8483245B2 (en) * 2010-07-30 2013-07-09 General Motors Llc Multi-tone detection for in-band data modem link establishment in wireless networks
EP3308483B1 (en) * 2015-06-15 2020-02-05 Telefonaktiebolaget LM Ericsson (publ) Variable synchronization block format
WO2017025141A1 (en) * 2015-08-12 2017-02-16 Telefonaktiebolaget Lm Ericsson (Publ) Method of determining a mode of operation for a wireless terminal
US9973300B2 (en) * 2016-06-09 2018-05-15 Echelon Corporation Modulation adaption method for multi-mode modems
CN108461087B (zh) * 2018-02-07 2020-06-30 河南芯盾网安科技发展有限公司 数字信号穿过声码器的装置及方法
CN109256141B (zh) * 2018-09-13 2023-03-28 北京芯盾集团有限公司 利用语音信道进行数据传输的方法
JP7103197B2 (ja) * 2018-12-14 2022-07-20 トヨタ自動車株式会社 通信システム
US11496970B2 (en) * 2019-03-06 2022-11-08 Qualcomm Incorporated Support of high pathloss mode
US11438808B2 (en) 2019-04-17 2022-09-06 Qualcomm Incorporated Acknowledgment messaging for resource reservations
US11477747B2 (en) 2019-04-17 2022-10-18 Qualcomm Incorporated Synchronization signal periodicity adjustment
US11463964B2 (en) 2019-04-17 2022-10-04 Qualcomm Incorporated Communication configuration for high pathloss operations
US11510071B2 (en) 2019-04-17 2022-11-22 Qualcomm Incorporated Beam direction selection for high pathloss mode operations
US11445408B2 (en) 2019-04-17 2022-09-13 Qualcomm Incorporated High pathloss mode multiplexing

Citations (438)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1945944A (en) 1930-12-03 1934-02-06 William W Varney Air conditioning system and apparatus therefor
US3742463A (en) 1970-03-02 1973-06-26 Nielsen A C Co Data storage and transmission system
US3742197A (en) 1972-01-14 1973-06-26 Stomberg Carlson Corp Synthesis of digital signals corresponding to selected analog signals
US3971888A (en) 1975-04-02 1976-07-27 Bell Telephone Laboratories, Incorporated Synchronization system for variable length encoded signals
US3984814A (en) 1974-12-24 1976-10-05 Honeywell Information Systems, Inc. Retry method and apparatus for use in a magnetic recording and reproducing system
US3985965A (en) 1975-07-02 1976-10-12 Gte Sylvania Incorporated Digital signal generator
US4158748A (en) 1977-06-27 1979-06-19 Motorola, Inc. Apparatus for digital data synchronization
US4218654A (en) 1978-04-28 1980-08-19 Kokusai Denshin Denwa Kabushiki Kaisha Space diversity system in TDMA communication system
US4310722A (en) 1978-11-09 1982-01-12 Bell Telephone Laboratories, Incorporated Mobile radiotelephone station two-way ranging system
US4355310A (en) 1977-02-03 1982-10-19 Schlumberger Technology Corporation Well logging communication system
US4368987A (en) 1980-06-25 1983-01-18 The United States Of America As Represented By The Secretary Of The Navy Conjugate-phase, remote-clock synchronizer
US4494114A (en) 1983-12-05 1985-01-15 International Electronic Technology Corp. Security arrangement for and method of rendering microprocessor-controlled electronic equipment inoperative after occurrence of disabling event
US4494211A (en) 1982-11-24 1985-01-15 The United States Of America As Represented By The Secretary Of The Navy Balanced system for ranging and synchronization between satellite pairs
US4539557A (en) 1981-10-19 1985-09-03 Sunderland & South Shields Water Company Combined communication, security and alarm radio system
US4577343A (en) 1979-12-10 1986-03-18 Nippon Electric Co. Ltd. Sound synthesizer
US4595950A (en) 1980-09-26 1986-06-17 Loefberg Bo Method and apparatus for marking the information content of an information carrying signal
US4598272A (en) 1984-08-06 1986-07-01 Cox Randall P Electronic monitoring apparatus
US4599583A (en) 1983-11-19 1986-07-08 Fujitsu Limited Mixed dual frequency generating system
US4607257A (en) 1981-12-25 1986-08-19 Nippon Electric Co. Ltd. Remote calibrating system for satellite time
US4630301A (en) 1985-06-04 1986-12-16 Well Made Toy Manufacturing Corp. Voice activated echo generator
US4641323A (en) 1983-02-07 1987-02-03 Tsang Chung K Multi-phase PSK demodulator
US4651157A (en) 1985-05-07 1987-03-17 Mets, Inc. Security monitoring and tracking system
US4656463A (en) 1983-04-21 1987-04-07 Intelli-Tech Corporation LIMIS systems, devices and methods
US4675656A (en) 1984-03-16 1987-06-23 Narcisse Bernadine O Out-of-range personnel monitor and alarm
US4685131A (en) 1985-03-11 1987-08-04 General Instrument Corp. Program blocking method for use in direct broadcast satellite system
EP0242099A2 (en) 1986-04-09 1987-10-21 Advanced Strategics, Inc. Anti-theft and locating system
US4750197A (en) 1986-11-10 1988-06-07 Denekamp Mark L Integrated cargo security system
US4754255A (en) 1984-03-12 1988-06-28 Sanders Rudy T User identifying vehicle control and security device
US4766589A (en) 1984-07-11 1988-08-23 Stc Plc Data transmission system
US4776003A (en) 1986-10-01 1988-10-04 Harris Arlene J Cellular mobile radio credit card system
US4817089A (en) * 1985-03-20 1989-03-28 International Mobile Machines Corporation Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels
US4831647A (en) 1987-06-02 1989-05-16 Motorola, Inc. Radiotelephone credit card data communications
US4860336A (en) 1987-06-02 1989-08-22 Motorola, Inc. Radiotelephone credit card data communications
WO1989012835A1 (en) 1988-06-17 1989-12-28 Keith Chisholm Brown Road vehicle locating system
US4914651A (en) 1988-09-20 1990-04-03 Cellular Data, Inc. Cellular data system
US4918717A (en) 1988-08-23 1990-04-17 Knight Protective Industries Alarm system having bidirectional communication with secured area
US4918425A (en) 1988-07-25 1990-04-17 Daniel E. Ely Monitoring and locating system for an object attached to a transponder monitored by a base station having an associated ID code
US4926444A (en) 1988-04-29 1990-05-15 Scientific-Atlanta, Inc. Data transmission method and apparatus by period shift keying (TSK)
US4941155A (en) 1989-11-16 1990-07-10 Bell Communications Research, Inc. Method and circuitry for symbol timing and frequency offset estimation in time division multiple access radio systems
US4965821A (en) 1988-12-23 1990-10-23 Gte Mobilnet Incorporated Cellular mobile radiotelephone-based system for rental of mobile equipment
US4977609A (en) 1988-10-28 1990-12-11 Gte Cellular Communications Corporation Interface circuit for telecommunications devices
US4984238A (en) 1988-03-14 1991-01-08 Fujitsu Limited Method and apparatus for frame synchronization
US5014344A (en) 1990-03-19 1991-05-07 Motorola, Inc. Method for synchronizing the transmissions in a simulcast transmission system
WO1991007044A1 (en) 1989-10-31 1991-05-16 Intelligence Technology Corporation Data and voice transmission over a cellular telephone system
US5025455A (en) 1989-11-30 1991-06-18 The United States Of America As Represented By The Administer, National Aeronautics And Space Administration Phase ambiguity resolution for offset QPSK modulation systems
US5036537A (en) 1984-11-19 1991-07-30 General Instrument Corp. Geographic black-out method for direct broadcast satellite system
US5040214A (en) 1985-11-27 1991-08-13 Boston University Pattern learning and recognition apparatus in a computer system
US5043736A (en) 1990-07-27 1991-08-27 Cae-Link Corporation Cellular position locating system
US5081667A (en) 1989-05-01 1992-01-14 Clifford Electronics, Inc. System for integrating a cellular telephone with a vehicle security system
US5095307A (en) 1988-05-17 1992-03-10 Casio Computer Co., Ltd. Radio paging communication system
US5119504A (en) 1990-07-19 1992-06-02 Motorola, Inc. Position aided subscriber unit for a satellite cellular system
US5119403A (en) 1991-04-09 1992-06-02 Racal Data Communications Inc. Superframes
US5134644A (en) 1990-08-17 1992-07-28 Senses International Data communication device
EP0501058A2 (en) 1991-01-17 1992-09-02 Highwaymaster Communications, Inc. Vehicle locating and communicating method and apparatus
EP0512789A2 (en) 1991-05-09 1992-11-11 Navsys Corporation Vehicle tracking system employing global positioning system (GPS) satellites
US5191611A (en) 1989-04-03 1993-03-02 Lang Gerald S Method and apparatus for protecting material on storage media and for transferring material on storage media to various recipients
US5201071A (en) 1990-09-26 1993-04-06 Rockwell International Corporation Method and apparatus for reducing the peak envelope voltage of an RF transmitter while maintaining signal average power
US5203012A (en) 1992-02-10 1993-04-13 Motorola, Inc. Method and apparatus for optimum channel assignment
US5208446A (en) 1991-09-19 1993-05-04 Martinez Jerry R Method and apparatus for validating credit information during home delivery of order
US5212831A (en) 1990-11-28 1993-05-18 Bell Communications Research, Inc. Method and apparatus for autonomous adaptive frequency assignment in TDMA portable radio systems
US5214556A (en) 1989-04-14 1993-05-25 Kilbel Joseph J Video cassette recorder protection system
US5218618A (en) 1990-11-07 1993-06-08 Hughes Aircraft Company Cellular telephone service using spread spectrum transmission
EP0545783A1 (fr) 1991-11-29 1993-06-09 Societe D'applications Generales D'electricite Et De Mecanique Sagem Modem semi-duplex pour réseau de radiotéléphones GSM
EP0545753A1 (en) 1991-11-11 1993-06-09 Sumitomo Metal Industries, Ltd. Duplex stainless steel having improved strength and corrosion resistance
US5223844A (en) 1992-04-17 1993-06-29 Auto-Trac, Inc. Vehicle tracking and security system
US5227776A (en) 1987-03-18 1993-07-13 Starefoss Carl E Combined alarm, security and rescue system
US5235633A (en) 1991-12-26 1993-08-10 Everett Dennison Cellular telephone system that uses position of a mobile unit to make call management decisions
US5245634A (en) 1992-03-23 1993-09-14 Motorola, Inc. Base-site synchronization in a communication system
US5245647A (en) 1990-09-17 1993-09-14 Institut Francais Du Petrole Method and device for synchronizing on an outside event the sampling of measuring signals through a digitizing assembly of the oversampling type
US5272747A (en) 1988-09-09 1993-12-21 Australian And Overseas Telecommunications Corp. Limited Mobile pay telephone system
US5282204A (en) 1992-04-13 1994-01-25 Racotek, Inc. Apparatus and method for overlaying data on trunked radio
EP0580397A2 (en) 1992-07-23 1994-01-26 Workspace Technologies Limited Conferencing apparatus
US5289372A (en) 1992-08-18 1994-02-22 Loral Aerospace Corp. Global equipment tracking system
US5301359A (en) 1989-04-27 1994-04-05 Motorola, Inc. Bulletin board resource for communication system access
US5301353A (en) 1990-02-12 1994-04-05 Motorola, Inc. Communication system and apparatus
US5305384A (en) 1990-12-04 1994-04-19 Chips International, Inc. Apparatus, system and method for transmitting secure signals over narrow spaced channels
US5317309A (en) 1990-11-06 1994-05-31 Westinghouse Electric Corp. Dual mode electronic identification system
US5331635A (en) 1993-02-12 1994-07-19 Fuji Xerox Co., Ltd. Network system having function of updating routing information
US5333175A (en) 1993-01-28 1994-07-26 Bell Communications Research, Inc. Method and apparatus for dynamic power control in TDMA portable radio systems
US5334974A (en) 1992-02-06 1994-08-02 Simms James R Personal security system
US5347272A (en) 1991-09-13 1994-09-13 Fuji Xerox Co., Ltd. System for determining communication routes in a network
US5363375A (en) 1993-07-30 1994-11-08 Bell Communications Research, Inc. Method and apparatus for synchronizing timing among radio ports in wireless communications systems using hierarchical scheme
US5363376A (en) 1993-07-30 1994-11-08 Bell Communications Research, Inc. Method and apparatus for synchronizing timing among radio ports in wireless communications systems
US5365450A (en) 1992-12-17 1994-11-15 Stanford Telecommunications, Inc. Hybrid GPS/data line unit for rapid, precise, and robust position determination
US5365577A (en) 1990-09-27 1994-11-15 Radish Communications Systems, Inc. Telecommunication display system
US5379224A (en) 1991-11-29 1995-01-03 Navsys Corporation GPS tracking system
US5381129A (en) 1994-03-23 1995-01-10 Radio Systems, Inc. Wireless pet containment system
US5388247A (en) 1993-05-14 1995-02-07 Digital Equipment Corporation History buffer control to reduce unnecessary allocations in a memory stream buffer
US5388147A (en) 1993-08-30 1995-02-07 At&T Corp. Cellular telecommunication switching system for providing public emergency call location information
US5390216A (en) 1991-11-02 1995-02-14 Robert Bosch Gmbh Synchronization method for a mobile radiotelephone
US5389934A (en) 1993-06-21 1995-02-14 The Business Edge Group, Inc. Portable locating system
US5396653A (en) 1992-06-05 1995-03-07 Nokia Mobile Phones Ltd. Cellular telephone signalling circuit operable with different cellular telephone systems
US5396539A (en) 1991-03-25 1995-03-07 Novatel Communications, Ltd. Cellular data overlay system for storing data identifying selected data allocated channels
US5408684A (en) 1992-09-21 1995-04-18 Ntt Mobile Communications Network, Inc. Control channel selecting method for mobile stations
US5410541A (en) 1992-05-04 1995-04-25 Ivon International, Inc. System for simultaneous analog and digital communications over an analog channel
US5410739A (en) 1992-09-29 1995-04-25 The Titan Corporation Variable data message communication over voice communication channel
US5414432A (en) 1992-03-04 1995-05-09 Motorola, Inc. Position locating transceiver
US5418537A (en) 1992-11-18 1995-05-23 Trimble Navigation, Ltd. Location of missing vehicles
US5420592A (en) 1993-04-05 1995-05-30 Radix Technologies, Inc. Separated GPS sensor and processing system for remote GPS sensing and centralized ground station processing for remote mobile position and velocity determinations
US5422816A (en) 1994-02-22 1995-06-06 Trimble Navigation Limited Portable personal navigation tracking system
US5428636A (en) 1993-05-03 1995-06-27 Norand Corporation Radio frequency local area network
US5438337A (en) 1993-09-24 1995-08-01 Northrop Grumman Corporation Navigation system using re-transmitted GPS
US5440491A (en) 1993-10-19 1995-08-08 Kabushiki Kaisha Toshiba Pseudo GPS signal transmitting system in a base station
WO1995021511A1 (en) 1994-02-07 1995-08-10 Harold Ii Pace Mobile location reporting apparatus and methods
US5448622A (en) 1991-07-08 1995-09-05 Nokia Mobile Phones Ltd. Cellular telephone with plural telephone numbers
US5450130A (en) 1994-03-30 1995-09-12 Radius Inc. Method and system for cell based image data compression
US5459469A (en) 1994-02-04 1995-10-17 Stanford Telecommunications, Inc. Air traffic surveillance and communication system
US5461390A (en) 1994-05-27 1995-10-24 At&T Ipm Corp. Locator device useful for house arrest and stalker detection
GB2290005A (en) 1994-05-28 1995-12-06 Motorola Ltd Communications system
US5475864A (en) 1993-07-19 1995-12-12 Nec Corporation High-cross correlation dynamic channel assignment for sectorized cells
US5475868A (en) 1992-08-04 1995-12-12 U.S. Philips Corporation Cellular radio system having channel evaluation and optimal channel selection via trial use of non-assigned channels
US5479480A (en) 1993-12-30 1995-12-26 At&T Corp. Dual mode cellular modem
US5479482A (en) 1993-08-30 1995-12-26 At&T Corp. Cellular terminal for providing public emergency call location information
US5483549A (en) 1994-03-04 1996-01-09 Stanford Telecommunications, Inc. Receiver having for charge-coupled-device based receiver signal processing
DE4424412A1 (de) 1994-07-12 1996-01-18 Esg Elektroniksystem Und Logis Funktelekommunikationssystem mit Satelliten-Navigation
US5491690A (en) 1993-07-30 1996-02-13 International Business Machines Corporation Method and apparatus to speed up the path selection in a packet switching network
US5497149A (en) 1993-09-02 1996-03-05 Fast; Ray Global security system
WO1996007110A1 (en) 1994-09-01 1996-03-07 British Telecommunications Public Limited Company Navigation information system
US5504491A (en) 1994-04-25 1996-04-02 Chapman; Robert W. Global status and position reporting system
US5506888A (en) 1991-03-29 1996-04-09 Telefonaktiebolaget L M Ericsson Auxillary communication service routing
US5509035A (en) 1993-04-14 1996-04-16 Qualcomm Incorporated Mobile station operating in an analog mode and for subsequent handoff to another system
US5510797A (en) 1993-04-15 1996-04-23 Trimble Navigation Limited Provision of SPS timing signals
US5515043A (en) 1994-08-17 1996-05-07 Berard; Alfredo J. Cellular/GPS system for vehicle tracking
US5519403A (en) 1993-11-29 1996-05-21 Motorola, Inc. Global positioning system communications multi-interface
WO1996015636A1 (en) 1994-11-16 1996-05-23 Highwaymaster Communications, Inc. Locating system and method using a mobile communications network
WO1996018275A1 (en) 1994-12-08 1996-06-13 Stanford Telecommunications, Inc. System for providing simultaneous data and voice communication
US5528232A (en) 1990-06-15 1996-06-18 Savi Technology, Inc. Method and apparatus for locating items
US5530701A (en) 1993-06-07 1996-06-25 Radio Local Area Networks, Inc. Network link controller
US5537458A (en) 1992-08-17 1996-07-16 Nokia Telecommunications Oy Facsimile transmission in a digital cellular radio network
US5539810A (en) 1992-01-27 1996-07-23 Highwaymaster Communications, Inc. Data messaging in a communications network
US5544222A (en) 1993-11-12 1996-08-06 Pacific Communication Sciences, Inc. Cellular digtial packet data mobile data base station
US5543789A (en) 1994-06-24 1996-08-06 Shields Enterprises, Inc. Computerized navigation system
US5546445A (en) 1991-12-26 1996-08-13 Dennison; Everett Cellular telephone system that uses position of a mobile unit to make call management decisions
US5550551A (en) 1994-07-25 1996-08-27 At&T Corp. Position monitoring system and method
US5555520A (en) 1993-12-03 1996-09-10 Kabushiki Kaisha Toshiba Trench capacitor cells for a dram having single monocrystalline capacitor electrode
US5555286A (en) 1994-01-31 1996-09-10 Tendler Technologies, Inc. Cellular phone based automatic emergency vessel/vehicle location system
US5557254A (en) 1993-11-16 1996-09-17 Mobile Security Communications, Inc. Programmable vehicle monitoring and security system having multiple access verification devices
US5565858A (en) 1994-09-14 1996-10-15 Northrop Grumman Corporation Electronic inventory system for stacked containers
US5566173A (en) 1994-10-12 1996-10-15 Steinbrecher Corporation Communication system
US5572204A (en) 1995-04-10 1996-11-05 Ford Motor Company Vehicular emergency message system
US5576716A (en) 1994-12-07 1996-11-19 Sadler; Kermit M. Owner oriented system for locating lost or stolen property
US5587715A (en) 1993-03-19 1996-12-24 Gps Mobile, Inc. Method and apparatus for tracking a moving object
US5590396A (en) 1994-04-20 1996-12-31 Ericsson Inc. Method and apparatus for a deep-sleep mode in a digital cellular communication system
US5594425A (en) 1994-10-31 1997-01-14 Peoplenet, Inc. Locator device
US5619684A (en) 1994-07-25 1997-04-08 International Business Machines Corporation Method and apparatus for consistent user interface in a multiple application personal communications device
US5621388A (en) 1993-06-10 1997-04-15 Sherburne; Glenn M. System for monitoring and locating a person within a preselected distance from a base-station
USRE35498E (en) 1990-02-28 1997-04-29 U.S. Philips Corporation Vehicle location system
US5625668A (en) 1994-04-12 1997-04-29 Trimble Navigation Limited Position reporting cellular telephone
US5627517A (en) 1995-11-01 1997-05-06 Xerox Corporation Decentralized tracking and routing system wherein packages are associated with active tags
US5630206A (en) 1994-08-11 1997-05-13 Stanford Telecommunications, Inc. Position enhanced cellular telephone system
US5635450A (en) 1990-12-01 1997-06-03 Basf Aktiengesellschaft Herbicidal N-[(1, 3, 5-Triazin-2-yl)-aminocarbonyl]-benzenesulfonamides
US5637355A (en) 1996-04-22 1997-06-10 Rmt, Inc. Method of nonhazardous removal of paint containing heavy metals and coating preparation for performing the same
US5640444A (en) 1990-06-01 1997-06-17 Spectrum Information Technologies, Inc. Methods and apparatus for controlling data transmission using radio devices
US5650770A (en) 1994-10-27 1997-07-22 Schlager; Dan Self-locating remote monitoring systems
US5663734A (en) 1995-10-09 1997-09-02 Precision Tracking, Inc. GPS receiver and method for processing GPS signals
US5666357A (en) 1995-03-23 1997-09-09 Hughes Electronics DTMF tone passer in a voice communication system
US5668803A (en) 1989-06-29 1997-09-16 Symbol Technologies, Inc. Protocol for packet data communication system
US5673305A (en) 1993-05-14 1997-09-30 Worldwide Notification Systems, Inc. Apparatus and method for tracking and reporting the location of a motor vehicle
US5680439A (en) 1994-04-29 1997-10-21 Alcatel N.V. Fixed cellular technical with a distinctive dial tone to indicate an emergency call is being placed
US5686910A (en) 1995-04-10 1997-11-11 Ford Motor Company Vehicular emergency message system with automatic periodic call-in
US5687216A (en) 1993-08-31 1997-11-11 Ericsson Inc. Apparatus for storing messages in a cellular mobile terminal
US5687215A (en) 1995-04-10 1997-11-11 Ford Motor Company Vehicular emergency message system
US5691980A (en) 1995-06-07 1997-11-25 General Electric Company Local communication network for power reduction and enhanced reliability in a multiple node tracking system
US5703598A (en) 1996-05-24 1997-12-30 Emmons; Ardath H. Method and system for tracking stolen property
US5711013A (en) 1995-01-18 1998-01-20 Cycomm Corporation Conformant compact portable cellular phone case system and connector
US5712619A (en) 1996-04-18 1998-01-27 Simkin; Alan C. Global positioning system personal alarm
US5724243A (en) 1995-02-10 1998-03-03 Highwaymaster Communications, Inc. Method and apparatus for determining expected time of arrival
US5726984A (en) 1989-01-31 1998-03-10 Norand Corporation Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones
US5726893A (en) 1992-12-17 1998-03-10 Stanford Telecommunications, Inc. Cellular telephone with voice-in-data modem
US5731757A (en) 1996-08-19 1998-03-24 Pro Tech Monitoring, Inc. Portable tracking apparatus for continuous position determination of criminal offenders and victims
US5732326A (en) 1994-09-30 1998-03-24 Fujitsu Limited Information guiding system and method of preventing borrower of portable terminal unit from forgetting to return it
US5734981A (en) 1991-01-17 1998-03-31 Highwaymaster Communications, Inc. Method and apparatus for call delivery to a mobile unit
US5742233A (en) 1997-01-21 1998-04-21 Hoffman Resources, Llc Personal security and tracking system
US5748083A (en) 1996-03-11 1998-05-05 Security Solutions Plus Computer asset protection apparatus and method
US5748084A (en) 1996-11-18 1998-05-05 Isikoff; Jeremy M. Device security system
US5752195A (en) 1993-12-30 1998-05-12 Northern Telecom Limited Cordless telephone terminal
US5752186A (en) 1995-06-07 1998-05-12 Jeman Technologies, Inc. Access free wireless telephony fulfillment service system
US5752193A (en) 1995-09-01 1998-05-12 Motorola, Inc. Method and apparatus for communicating in a wireless communication system
US5751246A (en) 1995-04-04 1998-05-12 Itt Industries, Inc. Accountability and theft protection via the global positioning system
US5754554A (en) 1994-10-28 1998-05-19 Nec Corporation Telephone apparatus for multiplexing digital speech samples and data signals using variable rate speech coding
US5761292A (en) 1993-01-04 1998-06-02 Intel Corporation Simultaneous transfer of control information with voice and data over a public switched telephone network line
US5761204A (en) 1993-11-15 1998-06-02 Qualcomm Incorporated Method and apparatus of providing time sensitive messages over a variable delay channel
USD395250S (en) 1997-05-29 1998-06-16 Garmin Corporation Combined hand held communication receiver and GPS device
US5771001A (en) 1996-11-18 1998-06-23 Cobb; Marlon J. Personal alarm system
US5774876A (en) 1996-06-26 1998-06-30 Par Government Systems Corporation Managing assets with active electronic tags
US5778024A (en) * 1996-02-01 1998-07-07 Qualcomm Incorporated Dual-mode communications processor
US5784422A (en) 1996-08-05 1998-07-21 Transcrypt International, Inc. Apparatus and method for accurate synchronization with inbound data packets at relatively low sampling rates
US5786789A (en) 1994-11-14 1998-07-28 Trimble Navigation Limited GPS and cellphone unit having add-on modules
US5790842A (en) 1996-10-11 1998-08-04 Divicom, Inc. Processing system with simultaneous utilization of multiple clock signals
WO1998034359A1 (en) 1997-01-31 1998-08-06 Telefonaktiebolaget Lm Ericsson Air frame synchronisation
WO1998034164A1 (en) 1997-02-03 1998-08-06 Snaptrack, Inc. Method and apparatus for satellite positioning system based time measurement
US5794124A (en) 1994-03-11 1998-08-11 Ntt Mobile Communications Network Inc. Time diversity communications system
US5797091A (en) 1995-03-07 1998-08-18 Xypoint Corporation Personal communication system and method of use
US5796808A (en) 1997-01-09 1998-08-18 Paradyne Corporation System and method for automatically selecting the mode of communication between a plurality of modems
US5805576A (en) 1995-10-18 1998-09-08 Cellular Telecom, Ltd. Method and apparatus for TDMA wireless communication employing collector arrays for range extension
US5804810A (en) 1996-06-26 1998-09-08 Par Government Systems Corporation Communicating with electronic tags
US5812522A (en) 1995-03-31 1998-09-22 Airtouch Communications, Inc. Location-ruled radio-integrated network
US5815114A (en) 1996-04-05 1998-09-29 Discovision Associates Positioning system and method
US5825327A (en) 1996-03-08 1998-10-20 Snaptrack, Inc. GPS receivers and garments containing GPS receivers and methods for using these GPS receivers
US5825283A (en) 1996-07-03 1998-10-20 Camhi; Elie System for the security and auditing of persons and property
US5826188A (en) 1995-12-07 1998-10-20 Motorola, Inc. Method and apparatus for handing off calls between differing radio telecommunication networks
US5831574A (en) 1996-03-08 1998-11-03 Snaptrack, Inc. Method and apparatus for determining the location of an object which may have an obstructed view of the sky
US5835907A (en) 1995-12-20 1998-11-10 Mci Communications Corporation Emergency PCS system for identification and notification of a subscriber's location
US5838237A (en) 1996-05-22 1998-11-17 Revell; Graeme Charles Personal alarm device
US5841842A (en) 1994-03-11 1998-11-24 U.S. Robotics Access Corp. Telephone call routing and switching techniques for data communications
US5842141A (en) 1996-01-01 1998-11-24 Nokia Mobile Phones Limited Mobile terminal having user-actuated pager mode
US5841396A (en) 1996-03-08 1998-11-24 Snaptrack, Inc. GPS receiver utilizing a communication link
WO1998053573A2 (en) 1997-05-19 1998-11-26 Integrated Data Communications, Inc. System and method to communicate time stamped, 3-axis geo-position data within telecommunication networks
US5850392A (en) 1996-04-10 1998-12-15 Ericsson Inc. Spread spectrum random access systems and methods for time division multiple access radiotelephone communication systems
WO1998059256A2 (en) 1997-06-25 1998-12-30 Navox Corporation Vehicle tracking and security system incorporating simultaneous voice and data communication
WO1998059257A1 (en) 1997-06-24 1998-12-30 Snaptrack, Inc. Highly parallel gps correlator system and method
US5856986A (en) 1996-11-25 1999-01-05 Texas Instruments Incorporated Synchronization field pattern selection
EP0889610A2 (en) 1997-07-01 1999-01-07 Alcatel SPS synchronization method
US5864578A (en) 1996-04-29 1999-01-26 Golden Bridge Technology, Inc. Matched filter-based handoff method and apparatus
US5864763A (en) 1996-09-24 1999-01-26 Qualcomm Inc Digital wireless telephone system interface for analog telecommunications equipment
US5870675A (en) 1995-06-09 1999-02-09 Nokia Mobile Phones, Ltd. Method for improving handover
EP0896442A1 (en) 1996-12-26 1999-02-10 Ntt Mobile Communications Network Inc. Frame transmitter-receiver
US5881373A (en) 1996-08-28 1999-03-09 Telefonaktiebolaget Lm Ericsson Muting a microphone in radiocommunication systems
US5881069A (en) 1997-12-12 1999-03-09 Motorola, Inc. Method and apparatus for error correction processing in a radio communication device
US5884214A (en) 1996-09-06 1999-03-16 Snaptrack, Inc. GPS receiver and method for processing GPS signals
US5886634A (en) 1997-05-05 1999-03-23 Electronic Data Systems Corporation Item removal system and method
WO1999014885A2 (en) 1997-09-18 1999-03-25 Nokia Mobile Phones Limited Time diversity in a tdma system
US5890108A (en) 1995-09-13 1999-03-30 Voxware, Inc. Low bit-rate speech coding system and method using voicing probability determination
US5892454A (en) 1993-12-21 1999-04-06 Trimble Navigation Ltd. Hybrid monitoring of location of a site confinee
US5892441A (en) 1996-06-26 1999-04-06 Par Government Systems Corporation Sensing with active electronic tags
US5901179A (en) 1993-06-25 1999-05-04 Matsushita Electric Industrial Co., Ltd. Waveform shaping method and equipment
US5911129A (en) 1996-12-13 1999-06-08 Intel Corporation Audio font used for capture and rendering
US5912886A (en) 1996-02-09 1999-06-15 Nec Corporation Digital mobile communication system capable of establishing mutual synchronization among a plurality of radio base stations
US5917449A (en) 1995-06-07 1999-06-29 Sanconix Inc. Enhanced position calculation
US5918180A (en) 1995-12-22 1999-06-29 Dimino; Michael Telephone operable global tracking system for vehicles
WO1999036795A1 (en) 1998-01-20 1999-07-22 Snaptrack, Inc. Reducing cross-interference in a combined gps receiver and communication system
US5930340A (en) 1997-07-07 1999-07-27 Advanced Micro Devices Device and method for isolating voice and data signals on a common carrier
US5930722A (en) 1995-03-07 1999-07-27 Hyundai Electronics Industries Co. Ltd. Digital mobile communication system and timing design method between various subsystems
US5933468A (en) 1997-03-06 1999-08-03 Telefonaktiebolaget L M Ericsson (Publ) Continuous synchronization adjustment in a telecommunications system
US5936526A (en) 1998-01-13 1999-08-10 Micron Electronics, Inc. Apparatus for generating an alarm in a portable computer system
US5937355A (en) 1995-12-07 1999-08-10 Telefonaktiebolaget Lm Ericsson (Publ) Emergency call handling in a cellular telecommunication system
US5940598A (en) 1997-01-28 1999-08-17 Bell Atlantic Network Services, Inc. Telecommunications network to internetwork universal server
US5946304A (en) 1997-01-08 1999-08-31 Paradyne Corporation Method and apparatus for controlling the operation of a modem capable of transmitting and receiving both voice and data signals
US5949335A (en) 1998-04-14 1999-09-07 Sensormatic Electronics Corporation RFID tagging system for network assets
US5953694A (en) 1995-01-19 1999-09-14 Siemens Aktiengesellschaft Method for transmitting items of speech information
US5960363A (en) 1996-01-24 1999-09-28 Sony Corporation Tone generating apparatus for a cellular telephone to simulate tones normally sensed by a user of a land-line telephone
WO1999049677A1 (en) 1998-03-24 1999-09-30 Telefonaktiebolaget Lm Ericsson (Publ) Cellular simultaneous voice and data transmission including digital simultaneous voice and data (dsvd) modem
US5963130A (en) 1996-10-28 1999-10-05 Zoltar Satellite Alarm Systems, Inc. Self-locating remote monitoring systems
US5961608A (en) 1996-10-04 1999-10-05 Sony Corporation Modem and communications control selection
US5963134A (en) 1997-07-24 1999-10-05 Checkpoint Systems, Inc. Inventory system using articles with RFID tags
US5970130A (en) 1997-02-26 1999-10-19 Dynamic Telcom Engineering, L.L.C. Independent central office which provides local and long distance calling services to new residential and commercial developments
US5978676A (en) 1996-11-15 1999-11-02 Telefonaktiebolaget L/M Ericsson (Publ) Inband signal converter, and associated method, for a digital communication system
WO1999056144A1 (en) 1998-04-28 1999-11-04 Snaptrack, Inc. Method and apparatus for providing location-based information via a computer network
WO1999056143A1 (en) 1998-04-28 1999-11-04 Snaptrack, Inc. Distributed satellite position system processing and application network
US5991279A (en) 1995-12-07 1999-11-23 Vistar Telecommunications Inc. Wireless packet data distributed communications system
US5999124A (en) 1998-04-22 1999-12-07 Snaptrack, Inc, Satellite positioning system augmentation with wireless communication signals
US5999126A (en) 1996-08-06 1999-12-07 Sony Corporation Position measuring apparatus, position measuring method, navigation apparatus, navigation method, information service method, automotive vehicle, and audio information transmitting and receiving method
US6002363A (en) 1996-03-08 1999-12-14 Snaptrack, Inc. Combined GPS positioning system and communications system utilizing shared circuitry
US6006189A (en) 1997-10-10 1999-12-21 Nortel Networks Corporation Method and apparatus for storing and forwarding voice signals
US6009325A (en) 1995-02-01 1999-12-28 Motorola, Inc. Method of and apparatus for operating a cellular phone in one of two modes
US6009338A (en) 1996-04-26 1999-12-28 Mitsubishi Denki Kabushiki Kaisha Mobile information terminal equipment and portable electronic apparatus
US6011973A (en) 1996-12-05 2000-01-04 Ericsson Inc. Method and apparatus for restricting operation of cellular telephones to well delineated geographical areas
CA2242495A1 (en) 1998-07-06 2000-01-06 Northern Telecom Limited Data network node connection establishment
US6014090A (en) 1997-12-22 2000-01-11 At&T Corp. Method and apparatus for delivering local information to travelers
US6014376A (en) 1996-09-18 2000-01-11 Motorola, Inc. Method for over-the-air synchronization adjustment in a communication system
US6014089A (en) 1996-10-28 2000-01-11 Tracy Corporation Ii Method for transmitting data using a digital control channel of a wireless network
US6018654A (en) 1996-10-29 2000-01-25 Ericsson Inc Method and apparatus for downloading tones to mobile terminals
US6021163A (en) 1994-06-15 2000-02-01 Fujitsu Limited Inter-unit digital signal transmitting method, digital signal transmitter and receiver equipment, digital signal transmitter, and digital signal receiver
US6024142A (en) 1998-06-25 2000-02-15 Micron Communications, Inc. Communications system and method, fleet management system and method, and method of impeding theft of fuel
US6032037A (en) 1997-12-16 2000-02-29 Sur-Gard Security Systems Ltd. Alarm panel with cellular communications backup
US6031489A (en) 1997-02-01 2000-02-29 Ico Services Ltd. User terminal positioning system and method employing external signals
WO2000011893A1 (en) 1998-08-21 2000-03-02 Motorola, Inc. Method and apparatus for control of vocoder bypass utilizing inband signaling
US6038310A (en) 1994-08-01 2000-03-14 British Telecommunications Public Limited Company Service node for a telephony network
US6038595A (en) 1998-03-02 2000-03-14 Emc Corporation Information/communication device for network based services and a system for use of information/communication based services
US6041124A (en) 1995-12-19 2000-03-21 Sony Corporation Radio communication system and method and mobile communication terminal device
US6044257A (en) 1998-03-19 2000-03-28 American Secure Care, Llc Panic button phone
US6049971A (en) 1995-03-31 2000-04-18 Sgs-Thomson Microelectronics S.A. Casing for integrated circuit chips and method of fabrication
US6055434A (en) 1997-02-11 2000-04-25 Ericsson Inc. Method and system for locating a mobile station within a mobile telecommunications network
US6057756A (en) 1995-06-07 2000-05-02 Engellenner; Thomas J. Electronic locating systems
US6067044A (en) 1998-09-21 2000-05-23 National Systems And Research Company Remote tracking and sensing system and method
US6067457A (en) 1996-04-30 2000-05-23 Motorola, Inc. Method for dynamically assigning priority to a call
US6069570A (en) 1996-09-20 2000-05-30 Atx Technologies, Inc. Asset location system
US6070089A (en) 1998-08-21 2000-05-30 Motorola, Inc. Method and apparatus for control of vocoder bypass utilizing inband signaling
US6076099A (en) 1997-09-09 2000-06-13 Chen; Thomas C. H. Method for configurable intelligent-agent-based wireless communication system
US6081523A (en) 1997-12-05 2000-06-27 Advanced Micro Devices, Inc. Arrangement for transmitting packet data segments from a media access controller across multiple physical links
US6097760A (en) 1996-12-27 2000-08-01 Roke Manor Research Limited Data communications system
US6101395A (en) 1998-02-13 2000-08-08 Intel Corporation Method and apparatus for optimizing call setup traffic in a communications network with out-of-band call control signaling
US6122514A (en) 1997-01-03 2000-09-19 Cellport Systems, Inc. Communications channel selection
US6122271A (en) 1997-07-07 2000-09-19 Motorola, Inc. Digital communication system with integral messaging and method therefor
US6121922A (en) 1994-10-12 2000-09-19 Veridian Erim International, Inc. Tracking system using miniaturized concealable communications module
US6131067A (en) 1995-10-09 2000-10-10 Snaptrack, Inc. Client-server based remote locator device
US6133874A (en) 1996-03-08 2000-10-17 Snaptrack, Inc. Method and apparatus for acquiring satellite positioning system signals
US6131366A (en) 1997-04-09 2000-10-17 Ishida Co., Ltd. Packaging machine with mechanisms for positioning its former
US6151493A (en) 1997-09-04 2000-11-21 Miyaken Co., Ltd. Device for prohibiting unauthorized use of electronic devices
US6154658A (en) 1998-12-14 2000-11-28 Lockheed Martin Corporation Vehicle information and safety control system
US6166688A (en) 1999-03-31 2000-12-26 International Business Machines Corporation Data processing system and method for disabling a portable computer outside an authorized area
US6169497B1 (en) 1993-04-01 2001-01-02 Bruno G. Robert Mobile tracking and positioning system
US6173194B1 (en) 1996-04-15 2001-01-09 Nokia Mobile Phones Limited Mobile terminal having improved user interface
US6175307B1 (en) 1997-03-18 2001-01-16 Digital Security Controls Ltd. Security system with audible link and two-way communication
US6181253B1 (en) 1993-12-21 2001-01-30 Trimble Navigation Limited Flexible monitoring of location and motion
US6195736B1 (en) 1997-04-04 2001-02-27 International Business Machines Corporation Method for paging software wavetable synthesis samples
US6208959B1 (en) 1997-12-15 2001-03-27 Telefonaktibolaget Lm Ericsson (Publ) Mapping of digital data symbols onto one or more formant frequencies for transmission over a coded voice channel
US6212207B1 (en) 1997-09-26 2001-04-03 3Com Corporation Robbed bit signal detection and compensation
US6236652B1 (en) 1998-11-02 2001-05-22 Airbiquity Inc. Geo-spacial Internet protocol addressing
US6249227B1 (en) 1998-01-05 2001-06-19 Intermec Ip Corp. RFID integrated in electronic assets
US6266008B1 (en) 1991-12-10 2001-07-24 Charles D. Huston System and method for determining freight container locations
US6269392B1 (en) 1994-11-15 2001-07-31 Christian Cotichini Method and apparatus to monitor and locate an electronic device using a secured intelligent agent
US6272315B1 (en) 1997-12-03 2001-08-07 Northern Telecom Limited Mobile satellite system/terrestrial wireless system interworking techniques
US6275990B1 (en) 1995-02-06 2001-08-14 Adc Telecommunications, Inc. Transport of payload information and control messages on multiple orthogonal carriers spread throughout substantially all of a frequency bandwith
US6282430B1 (en) 1999-01-01 2001-08-28 Motorola, Inc. Method for obtaining control information during a communication session in a radio communication system
JP2001238256A (ja) 2000-02-21 2001-08-31 Hitachi Kokusai Electric Inc 可変速度符号化システム
US6288645B1 (en) 1999-12-21 2001-09-11 International Business Machines Corp. Electronic location tag
US6295461B1 (en) 1997-11-03 2001-09-25 Intermec Ip Corp. Multi-mode radio frequency network system
US6301480B1 (en) 1997-09-05 2001-10-09 @Track Communications, Inc. System and method for communicating using a voice network and a data network
US6300875B1 (en) 1999-11-22 2001-10-09 Mci Worldcom, Inc. Method and apparatus for high efficiency position information reporting
US6300863B1 (en) 1994-11-15 2001-10-09 Absolute Software Corporation Method and apparatus to monitor and locate an electronic device using a secured intelligent agent via a global network
US6304186B1 (en) 1998-08-12 2001-10-16 Michael C. Rabanne System for tracking possessions
US6304637B1 (en) 1997-03-14 2001-10-16 Itxc, Inc. Method and apparatus for establishing and facilitating a direct quality voice call to a telephone extension on behalf of a client computer
WO2001078249A1 (en) 2000-04-11 2001-10-18 Airnet Communications Corporation Method and apparatus employing wireless in-band signaling for downlink transmission of commands
US6308060B2 (en) 1998-06-15 2001-10-23 @Track Communications, Inc. Method and apparatus for providing a communication path using a paging network
US6307471B1 (en) 1999-12-01 2001-10-23 Ensure Technologies, Inc. Radio based proximity token with multiple antennas
US6321091B1 (en) 1999-07-29 2001-11-20 Bryan Holland Portable locator system and method
US6326736B1 (en) 1999-10-26 2001-12-04 Samsung Sdi Co., Ltd. Method for driving plasma display panel
US6327533B1 (en) 2000-06-30 2001-12-04 Geospatial Technologies, Inc. Method and apparatus for continuously locating an object
WO2001099295A2 (en) 2000-06-22 2001-12-27 Airbiquity, Inc Inband signaling over digital wireless telecommunications networks
US6343217B1 (en) 1998-11-12 2002-01-29 Legerity, Inc. Digital cordless telephony with PCM coding
US6345251B1 (en) 1999-06-15 2002-02-05 Telefonaktiebolaget Lm Ericsson (Publ) Low-rate speech coder for non-speech data transmission
US20020022465A1 (en) 2000-08-15 2002-02-21 Mccullagh Michael J. Apparatus and method for integrated frequency hopping and GPS receiver
US6351495B1 (en) 1998-08-28 2002-02-26 Lucent Technologies Inc. Apparatus and method for conveying TTY signals over wireless telecommunication systems
US6359923B1 (en) 1997-12-18 2002-03-19 At&T Wireless Services, Inc. Highly bandwidth efficient communications
US6358145B1 (en) 1999-11-29 2002-03-19 Strottman International Broadcast sweepstakes game system and game piece device
US6362736B1 (en) 2000-01-04 2002-03-26 Lucent Technologies Inc. Method and apparatus for automatic recovery of a stolen object
US6373842B1 (en) 1998-11-19 2002-04-16 Nortel Networks Limited Unidirectional streaming services in wireless systems
US6405033B1 (en) 1998-07-29 2002-06-11 Track Communications, Inc. System and method for routing a call using a communications network
WO2002054694A1 (en) 2001-01-02 2002-07-11 Airbiquity Inc. Facility and method for cellular data communication between hearing impaired users and emergency service centers
US20020097706A1 (en) 1997-05-19 2002-07-25 Preston Dan A. In-band signaling for data communications over digital wireless telecommunications networks
US6430176B1 (en) 1998-11-06 2002-08-06 Nortel Networks Limited Multimedia channel management through PSTN signaling
US6434198B1 (en) 1998-08-28 2002-08-13 Lucent Technologies Inc. Method for conveying TTY signals over wireless communication systems
US20020111167A1 (en) 2001-02-13 2002-08-15 Telefonaktiebolaget Lm Ericsson (Publ). System and method of providing voice and data features in a time division multiple access (TDMA) network
US20020122401A1 (en) 2001-03-02 2002-09-05 Zeng-Jun Xiang System and method in a wireless telecommunication network for placing a voice call on hold and conducting a data session
US6466582B2 (en) 1997-05-30 2002-10-15 Adtran, Inc. Arbitration mechanism for statistically multiplexed frame relay switching system
US6470046B1 (en) 1997-02-26 2002-10-22 Paradyne Corporation Apparatus and method for a combined DSL and voice system
US6477633B1 (en) 1991-12-14 2002-11-05 Nokia Mobile Phones Limited Apparatus with menu-selected functions
US20030016639A1 (en) 2001-07-19 2003-01-23 Ericsson Inc. Telecommunications system and method for delivery of short message service messages to a mobile terminal in data mode
US6516198B1 (en) 1999-12-06 2003-02-04 Tendler Cellular Inc System for location reporting
US6519260B1 (en) 1999-03-17 2003-02-11 Telefonaktiebolaget Lm Ericsson (Publ) Reduced delay priority for comfort noise
US6522265B1 (en) 1997-06-25 2003-02-18 Navox Corporation Vehicle tracking and security system incorporating simultaneous voice and data communication
US6526026B1 (en) 1997-12-10 2003-02-25 Intel Corporation Digit transmission over wireless communication link
US6529744B1 (en) 1999-01-26 2003-03-04 Telefonaktiebolaget Lm Ericsson Handling menu information
WO2003034235A1 (en) 2001-10-17 2003-04-24 Infocus Corporation Dataconferencing method, appliance, and system
US6611804B1 (en) 1999-06-15 2003-08-26 Telefonaktiebolaget Lm Ericsson (Publ) Universal TTY/TDD devices for robust text and data transmission via PSTN and cellular phone networks
US6614349B1 (en) 1999-12-03 2003-09-02 Airbiquity Inc. Facility and method for tracking physical assets
US6617979B2 (en) 2000-08-04 2003-09-09 Matsushita Electric Industrial Co. Ltd. Emergency informing terminal, emergency informing system, and method for controlling emergency informing terminal
US6628967B1 (en) 1999-12-30 2003-09-30 Nortel Networks Limited Wireless communication device capable to transmit/receive TTY/TDD messages with variable data rate, embedded into audio data frames
WO2003081373A2 (en) 2002-03-21 2003-10-02 Nokia Corporation Service/device indication with graphical interface
US20030212562A1 (en) 2002-05-13 2003-11-13 General Motors Corporation Manual barge-in for server-based in-vehicle voice recognition systems
US20030227939A1 (en) 2002-06-05 2003-12-11 Satoru Yukie Establishing a connection using a hybrid receiver
US6665333B2 (en) 1999-08-02 2003-12-16 Itt Manufacturing Enterprises, Inc. Methods and apparatus for determining the time of arrival of a signal
US6681121B1 (en) 2000-03-21 2004-01-20 Airbiquity Inc. Circuitry for activating a modem in a cellular telephone
US6683855B1 (en) 1998-08-31 2004-01-27 Lucent Technologies Inc. Forward error correction for high speed optical transmission systems
US6690922B1 (en) 1998-12-23 2004-02-10 Honeywell International Inc. Radio frequency (RF) system loss compensation method using power measurement of pulsed RF source
US20040034529A1 (en) 2002-08-14 2004-02-19 Hooper Howard Gaines Multifunction printer that converts and prints voice data
US6697987B2 (en) 2000-10-31 2004-02-24 Lg Electronics Inc. Method of packet data transfer with hybrid ARQ
US6700867B2 (en) 2001-12-20 2004-03-02 Motorola, Inc. Method and system for reduced memory hybrid automatic repeat request
US6707421B1 (en) 1997-08-19 2004-03-16 Siemens Vdo Automotive Corporation Driver information system
US6747571B2 (en) 1999-03-08 2004-06-08 Comverge Technologies, Inc. Utility meter interface system
US6754265B1 (en) 1999-02-05 2004-06-22 Honeywell International Inc. VOCODER capable modulator/demodulator
US6771629B1 (en) 1999-01-15 2004-08-03 Airbiquity Inc. In-band signaling for synchronization in a voice communications network
US6778645B1 (en) 1998-10-30 2004-08-17 Intel Corporation Method and apparatus for coordinating a point to point data session from an existing voice telephone call
US6799050B1 (en) 2001-06-04 2004-09-28 Snaptrack, Inc. Reducing cross-interference in a combined GPS receiver and communication system
US20040192345A1 (en) 2003-03-24 2004-09-30 Osborn William R. Methods, systems and computer program products for providing location determination information to an assisted location service
US6836515B1 (en) 1998-07-24 2004-12-28 Hughes Electronics Corporation Multi-modulation radio communications
US6845153B2 (en) 2001-01-31 2005-01-18 Telefonaktiebolaget Lm Ericsson (Publ) Network independent party addressing using a unique identifier linked to network specific addresses
US20050090225A1 (en) 2004-11-16 2005-04-28 Om2 Technology Inc. A Simplified Second Generation Enhanced Emergency Communications System SSGE-911
US20050111563A1 (en) 2003-11-20 2005-05-26 Hsu-Hsiang Tseng De-mapping method for wireless communications systems
US20050147057A1 (en) 2000-05-17 2005-07-07 Ladue Christoph K. Octave pulse data method & apparatus
US6917449B2 (en) 1998-07-09 2005-07-12 Canon Kabushiki Kaisha Image processing apparatus and method of the same, and storage medium
US20050187882A1 (en) 2004-02-25 2005-08-25 Sampo Sovio Electronic payment schemes in a mobile environment for short-range transactions
US6940809B2 (en) 1998-09-22 2005-09-06 The Directv Group, Inc. System and method for transmitting data in frame format using an R-Rake retransmission technique with blind identification of data frames
US20050207511A1 (en) 2004-03-17 2005-09-22 General Motors Corporation. Meethod and system for communicating data over a wireless communication system voice channel utilizing frame gaps
US20050215228A1 (en) 2004-03-26 2005-09-29 Comverse Ltd. Voice session data session interoperability in the telephony environment
US20050226202A1 (en) 2004-03-31 2005-10-13 Dan Zhang Enhanced voice pre-emption of active packet data service
US20050278169A1 (en) * 2003-04-01 2005-12-15 Hardwick John C Half-rate vocoder
US6981022B2 (en) 2001-11-02 2005-12-27 Lucent Technologies Inc. Using PSTN to convey participant IP addresses for multimedia conferencing
US6993362B1 (en) 1999-03-16 2006-01-31 Telefonaktiebolaget L M Ericsson (Publ) Portable communication apparatus having a hierarchical menu system and a dynamic menu
US20060059261A1 (en) 2002-10-25 2006-03-16 Michael Finkenzeller Method and device for selecting network access to one or more data networks by means of a telecommunication terminal
US7092370B2 (en) 2000-08-17 2006-08-15 Roamware, Inc. Method and system for wireless voice channel/data channel integration
US7103550B2 (en) 2000-06-30 2006-09-05 Mitel Networks Corporation Method of using speech recognition to initiate a wireless application protocol (WAP) session
US20060246910A1 (en) 2000-05-31 2006-11-02 Jerry Petermann Wireless devices for use with a wireless communications system with articial intelligence-based distributive call routing
US20060287003A1 (en) 2005-06-15 2006-12-21 Kamyar Moinzadeh Concomitant inband signaling for data communications over digital wireless telecommunications network
US7164662B2 (en) 1997-05-19 2007-01-16 Airbiquity, Inc. Network delay identification method and apparatus
US7206574B2 (en) 2003-04-17 2007-04-17 Lucent Technologies Inc. Automated exchange of broadband communication addresses over a non-broadband channel in a wireless telecommunication system
US20070087756A1 (en) 2005-10-04 2007-04-19 Hoffberg Steven M Multifactorial optimization system and method
US7215965B2 (en) 2001-11-01 2007-05-08 Airbiquity Inc. Facility and method for wireless transmission of location data in a voice channel of a digital wireless telecommunications network
US20070124625A1 (en) 2005-11-30 2007-05-31 Microsoft Corporation Predicting degradation of a communication channel below a threshold based on data transmission errors
US20070155360A1 (en) 2005-12-30 2007-07-05 Yafan An Methods, Apparatuses and Systems for the Reporting of Roadway Speed and Incident Data and the Constructing of Speed Map Database
US7269188B2 (en) 2002-05-24 2007-09-11 Airbiquity, Inc. Simultaneous voice and data modem
US20070211624A1 (en) 2006-03-07 2007-09-13 Infineon Technologies Ag Communication device, radio communication arrangement and method for transmitting information
EP1843503A2 (en) 2006-04-07 2007-10-10 Airbiquity Inc., Time diversity for data communication over a voice channel
US7283904B2 (en) 2001-10-17 2007-10-16 Airbiquity, Inc. Multi-sensor fusion
US20070258398A1 (en) 2005-10-24 2007-11-08 General Motors Corporation Method for data communication via a voice channel of a wireless communication network
US20080025295A1 (en) 1998-11-20 2008-01-31 Elliott Isaac K Voice over data telecommunications network architecture
US20080039017A1 (en) 2006-08-08 2008-02-14 Samsung Electronics Co., Ltd. Mobile communication terminal and method for inputting/outputting voice during playback of music data by using bluetooth
US20080107094A1 (en) 2003-05-31 2008-05-08 Michael Borella System and method for integrating call control and data network access components
US7372833B2 (en) 2000-05-10 2008-05-13 Nokia Corporation Resource allocation in packet network
US20080132200A1 (en) 2006-11-02 2008-06-05 Denso Corporation In-vehicle emergency call apparatus
US20080140394A1 (en) 2005-02-11 2008-06-12 Clyde Holmes Method and system for low bit rate voice encoding and decoding applicable for any reduced bandwidth requirements including wireless
US20080143497A1 (en) 2006-12-15 2008-06-19 General Motors Corporation Vehicle Emergency Communication Mode Method and Apparatus
US7398100B2 (en) 2003-07-01 2008-07-08 Motorola, Inc. Method, apparatus and system for use in controlling transmission power during wireless communication
US20080182570A1 (en) 2004-05-21 2008-07-31 Carmen Kuhl Device and Method For Automated Functionality-Based Selective Establishing of Wireless Data Communication Connections
US20080212820A1 (en) 2007-03-02 2008-09-04 Samsung Electronics Co., Ltd. Audio signal output method and apparatus for short-range communication enabled headset
US7426466B2 (en) 2000-04-24 2008-09-16 Qualcomm Incorporated Method and apparatus for quantizing pitch, amplitude, phase and linear spectrum of voiced speech
US7430428B2 (en) 2003-02-28 2008-09-30 Temic Automotive Of North America, Inc. Method for communicating teletype information in a vehicle communication system between a vehicle and a remote station
US20080266064A1 (en) 1995-03-20 2008-10-30 Curran John W Apparatus and method for synchronizing visual/audible alarm units in an alarm system
US20080294340A1 (en) 2007-05-22 2008-11-27 Infineon Technologies Ag Generic object exchange profile message
US7477906B2 (en) 2004-02-27 2009-01-13 Research In Motion Limited Methods and apparatus for facilitating the determination of GPS location information for a mobile station without disrupting communications of a voice call
US7483418B2 (en) 2004-05-10 2009-01-27 Dialog Semiconductor Gmbh Data and voice transmission within the same mobile phone call
US20090055516A1 (en) 2007-08-24 2009-02-26 Victor Zhodzishsky Method and system for managing bluetooth communication using software or firmware filtering
US20090077407A1 (en) 2007-09-18 2009-03-19 Nec Corporation Apparatus, system and method for power management
US7508810B2 (en) 2005-01-31 2009-03-24 Airbiquity Inc. Voice channel control of wireless packet data communications
US7511611B2 (en) 2006-05-18 2009-03-31 Casella Waste Systems, Inc. Systems for and methods of asset management in a waste management service environment
US20090088180A1 (en) 2007-10-01 2009-04-02 James Lamance Computing geographical location of a mobile receiver using network measurement reports
US20090110033A1 (en) 1998-02-12 2009-04-30 Lot 41 Acquisition Foundation, Llc Multicarrier sub-layer for direct sequence channel and multiple-access coding
US7562393B2 (en) 2002-10-21 2009-07-14 Alcatel-Lucent Usa Inc. Mobility access gateway
US7583959B2 (en) 2003-07-07 2009-09-01 At&T Mobility Ii Llc One button access to network services from a remote control device
US7586240B2 (en) 2007-01-23 2009-09-08 Fujitsu Media Devices Limited Acoustic wave device
US7593449B2 (en) 1998-02-12 2009-09-22 Steve Shattil Multicarrier sub-layer for direct sequence channel and multiple-access coding
US7606555B2 (en) 2000-02-04 2009-10-20 At&T Intellectual Property 1, L.P. Location information system for a wireless communication device and method therefor
US20090265173A1 (en) 2008-04-18 2009-10-22 General Motors Corporation Tone detection for signals sent through a vocoder
US20090298428A1 (en) 2008-05-30 2009-12-03 Samsung Electronics Co., Ltd Method of connecting multiple bluetooth profiles and bluetooth apparatus using the same
WO2009149356A2 (en) 2008-06-05 2009-12-10 Qualcomm Incorporated System and method of an in-band modem for data communications over digital wireless communication networks
US20090306976A1 (en) * 2008-06-05 2009-12-10 Qualcomm Incorporated System and method of an in-band modem for data communications over digital wireless communication networks
US7653383B2 (en) 2003-02-28 2010-01-26 Motorola, Inc. Method and apparatus for remote data access in a mobile communication device
US7688260B2 (en) 2004-08-26 2010-03-30 Global Locate, Inc. Method and apparatus for locating position of a mobile device in an assisted satellite positioning system
US7701954B2 (en) 1999-04-13 2010-04-20 Broadcom Corporation Gateway with voice
TW201018163A (en) 2008-06-05 2010-05-01 Qualcomm Inc System and method of an in-band modem for data communications over digital wireless communication networks
US20100211660A1 (en) 2004-03-10 2010-08-19 Nokia Corporation System and method for pushing content to a terminal utilizing a network-initiated data service technique
US7809367B2 (en) 1999-12-29 2010-10-05 Volvo Teknisk Utveckling Ab System and method for prioritized communication between a central station and remote objects
US7856240B2 (en) 2004-06-07 2010-12-21 Clarity Technologies, Inc. Distributed sound enhancement
US7979095B2 (en) 2007-10-20 2011-07-12 Airbiquity, Inc. Wireless in-band signaling with in-vehicle systems
US7983310B2 (en) 2008-09-15 2011-07-19 Airbiquity Inc. Methods for in-band signaling through enhanced variable-rate codecs
US8036600B2 (en) 2009-04-27 2011-10-11 Airbiquity, Inc. Using a bluetooth capable mobile phone to access a remote network
US20110287736A1 (en) 2008-09-15 2011-11-24 Airbiquity Inc. Methods for in-band signaling through enhanced variable-rate codecs

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3551890B2 (ja) * 2000-04-10 2004-08-11 村田機械株式会社 通信端末装置
JP3486620B2 (ja) * 2002-03-18 2004-01-13 キヤノン株式会社 データ通信装置
US7790576B2 (en) * 2007-11-29 2010-09-07 Stats Chippac, Ltd. Semiconductor device and method of forming through hole vias in die extension region around periphery of die

Patent Citations (486)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1945944A (en) 1930-12-03 1934-02-06 William W Varney Air conditioning system and apparatus therefor
US3742463A (en) 1970-03-02 1973-06-26 Nielsen A C Co Data storage and transmission system
US3742197A (en) 1972-01-14 1973-06-26 Stomberg Carlson Corp Synthesis of digital signals corresponding to selected analog signals
US3984814A (en) 1974-12-24 1976-10-05 Honeywell Information Systems, Inc. Retry method and apparatus for use in a magnetic recording and reproducing system
US3971888A (en) 1975-04-02 1976-07-27 Bell Telephone Laboratories, Incorporated Synchronization system for variable length encoded signals
US3985965A (en) 1975-07-02 1976-10-12 Gte Sylvania Incorporated Digital signal generator
US4355310A (en) 1977-02-03 1982-10-19 Schlumberger Technology Corporation Well logging communication system
US4158748A (en) 1977-06-27 1979-06-19 Motorola, Inc. Apparatus for digital data synchronization
US4218654A (en) 1978-04-28 1980-08-19 Kokusai Denshin Denwa Kabushiki Kaisha Space diversity system in TDMA communication system
US4310722A (en) 1978-11-09 1982-01-12 Bell Telephone Laboratories, Incorporated Mobile radiotelephone station two-way ranging system
US4577343A (en) 1979-12-10 1986-03-18 Nippon Electric Co. Ltd. Sound synthesizer
US4368987A (en) 1980-06-25 1983-01-18 The United States Of America As Represented By The Secretary Of The Navy Conjugate-phase, remote-clock synchronizer
US4595950A (en) 1980-09-26 1986-06-17 Loefberg Bo Method and apparatus for marking the information content of an information carrying signal
US4539557A (en) 1981-10-19 1985-09-03 Sunderland & South Shields Water Company Combined communication, security and alarm radio system
US4607257A (en) 1981-12-25 1986-08-19 Nippon Electric Co. Ltd. Remote calibrating system for satellite time
US4494211A (en) 1982-11-24 1985-01-15 The United States Of America As Represented By The Secretary Of The Navy Balanced system for ranging and synchronization between satellite pairs
US4641323A (en) 1983-02-07 1987-02-03 Tsang Chung K Multi-phase PSK demodulator
US4656463A (en) 1983-04-21 1987-04-07 Intelli-Tech Corporation LIMIS systems, devices and methods
US4599583A (en) 1983-11-19 1986-07-08 Fujitsu Limited Mixed dual frequency generating system
US4494114B1 (en) 1983-12-05 1996-10-15 Int Electronic Tech Security arrangement for and method of rendering microprocessor-controlled electronic equipment inoperative after occurrence of disabling event
US4494114A (en) 1983-12-05 1985-01-15 International Electronic Technology Corp. Security arrangement for and method of rendering microprocessor-controlled electronic equipment inoperative after occurrence of disabling event
US4754255A (en) 1984-03-12 1988-06-28 Sanders Rudy T User identifying vehicle control and security device
US4675656A (en) 1984-03-16 1987-06-23 Narcisse Bernadine O Out-of-range personnel monitor and alarm
US4766589A (en) 1984-07-11 1988-08-23 Stc Plc Data transmission system
US4598272A (en) 1984-08-06 1986-07-01 Cox Randall P Electronic monitoring apparatus
US5036537A (en) 1984-11-19 1991-07-30 General Instrument Corp. Geographic black-out method for direct broadcast satellite system
US4685131A (en) 1985-03-11 1987-08-04 General Instrument Corp. Program blocking method for use in direct broadcast satellite system
US4817089A (en) * 1985-03-20 1989-03-28 International Mobile Machines Corporation Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels
US4817089B1 (en) * 1985-03-20 2000-02-01 Titan Corp Subscriber rf telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of rf channels
US4651157A (en) 1985-05-07 1987-03-17 Mets, Inc. Security monitoring and tracking system
US4630301B1 (en) 1985-06-04 1999-09-07 Well Made Toy Mfg Co Voice activated echo generator
US4630301A (en) 1985-06-04 1986-12-16 Well Made Toy Manufacturing Corp. Voice activated echo generator
US5040214A (en) 1985-11-27 1991-08-13 Boston University Pattern learning and recognition apparatus in a computer system
EP0242099A2 (en) 1986-04-09 1987-10-21 Advanced Strategics, Inc. Anti-theft and locating system
US4776003A (en) 1986-10-01 1988-10-04 Harris Arlene J Cellular mobile radio credit card system
US4750197A (en) 1986-11-10 1988-06-07 Denekamp Mark L Integrated cargo security system
US5227776A (en) 1987-03-18 1993-07-13 Starefoss Carl E Combined alarm, security and rescue system
US4831647A (en) 1987-06-02 1989-05-16 Motorola, Inc. Radiotelephone credit card data communications
US4860336A (en) 1987-06-02 1989-08-22 Motorola, Inc. Radiotelephone credit card data communications
US4984238A (en) 1988-03-14 1991-01-08 Fujitsu Limited Method and apparatus for frame synchronization
US4926444A (en) 1988-04-29 1990-05-15 Scientific-Atlanta, Inc. Data transmission method and apparatus by period shift keying (TSK)
US5095307A (en) 1988-05-17 1992-03-10 Casio Computer Co., Ltd. Radio paging communication system
WO1989012835A1 (en) 1988-06-17 1989-12-28 Keith Chisholm Brown Road vehicle locating system
US4918425A (en) 1988-07-25 1990-04-17 Daniel E. Ely Monitoring and locating system for an object attached to a transponder monitored by a base station having an associated ID code
US4918717A (en) 1988-08-23 1990-04-17 Knight Protective Industries Alarm system having bidirectional communication with secured area
US5272747A (en) 1988-09-09 1993-12-21 Australian And Overseas Telecommunications Corp. Limited Mobile pay telephone system
US4914651A (en) 1988-09-20 1990-04-03 Cellular Data, Inc. Cellular data system
US4977609A (en) 1988-10-28 1990-12-11 Gte Cellular Communications Corporation Interface circuit for telecommunications devices
US4965821A (en) 1988-12-23 1990-10-23 Gte Mobilnet Incorporated Cellular mobile radiotelephone-based system for rental of mobile equipment
US5726984A (en) 1989-01-31 1998-03-10 Norand Corporation Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones
US5191611A (en) 1989-04-03 1993-03-02 Lang Gerald S Method and apparatus for protecting material on storage media and for transferring material on storage media to various recipients
US5214556A (en) 1989-04-14 1993-05-25 Kilbel Joseph J Video cassette recorder protection system
US5301359A (en) 1989-04-27 1994-04-05 Motorola, Inc. Bulletin board resource for communication system access
US5081667A (en) 1989-05-01 1992-01-14 Clifford Electronics, Inc. System for integrating a cellular telephone with a vehicle security system
US5668803A (en) 1989-06-29 1997-09-16 Symbol Technologies, Inc. Protocol for packet data communication system
WO1991007044A1 (en) 1989-10-31 1991-05-16 Intelligence Technology Corporation Data and voice transmission over a cellular telephone system
US4941155A (en) 1989-11-16 1990-07-10 Bell Communications Research, Inc. Method and circuitry for symbol timing and frequency offset estimation in time division multiple access radio systems
US5025455A (en) 1989-11-30 1991-06-18 The United States Of America As Represented By The Administer, National Aeronautics And Space Administration Phase ambiguity resolution for offset QPSK modulation systems
US5301353A (en) 1990-02-12 1994-04-05 Motorola, Inc. Communication system and apparatus
USRE35498E (en) 1990-02-28 1997-04-29 U.S. Philips Corporation Vehicle location system
US5014344A (en) 1990-03-19 1991-05-07 Motorola, Inc. Method for synchronizing the transmissions in a simulcast transmission system
US5640444A (en) 1990-06-01 1997-06-17 Spectrum Information Technologies, Inc. Methods and apparatus for controlling data transmission using radio devices
US5528232A (en) 1990-06-15 1996-06-18 Savi Technology, Inc. Method and apparatus for locating items
US5119504A (en) 1990-07-19 1992-06-02 Motorola, Inc. Position aided subscriber unit for a satellite cellular system
EP0528090A1 (en) 1990-07-27 1993-02-24 CAE-Link Corporation Cellular position locating system
US5043736A (en) 1990-07-27 1991-08-27 Cae-Link Corporation Cellular position locating system
US5043736B1 (en) 1990-07-27 1994-09-06 Cae Link Corp Cellular position location system
US5134644A (en) 1990-08-17 1992-07-28 Senses International Data communication device
US5245647A (en) 1990-09-17 1993-09-14 Institut Francais Du Petrole Method and device for synchronizing on an outside event the sampling of measuring signals through a digitizing assembly of the oversampling type
US5201071A (en) 1990-09-26 1993-04-06 Rockwell International Corporation Method and apparatus for reducing the peak envelope voltage of an RF transmitter while maintaining signal average power
US5365577A (en) 1990-09-27 1994-11-15 Radish Communications Systems, Inc. Telecommunication display system
US5317309A (en) 1990-11-06 1994-05-31 Westinghouse Electric Corp. Dual mode electronic identification system
US5218618A (en) 1990-11-07 1993-06-08 Hughes Aircraft Company Cellular telephone service using spread spectrum transmission
US5212831A (en) 1990-11-28 1993-05-18 Bell Communications Research, Inc. Method and apparatus for autonomous adaptive frequency assignment in TDMA portable radio systems
US5635450A (en) 1990-12-01 1997-06-03 Basf Aktiengesellschaft Herbicidal N-[(1, 3, 5-Triazin-2-yl)-aminocarbonyl]-benzenesulfonamides
US5305384A (en) 1990-12-04 1994-04-19 Chips International, Inc. Apparatus, system and method for transmitting secure signals over narrow spaced channels
EP0501058A2 (en) 1991-01-17 1992-09-02 Highwaymaster Communications, Inc. Vehicle locating and communicating method and apparatus
US5519621A (en) 1991-01-17 1996-05-21 Highwaymaster Communications, Inc. Vehicle locating and communicating method and apparatus
US5155689A (en) 1991-01-17 1992-10-13 By-Word Technologies, Inc. Vehicle locating and communicating method and apparatus
US5734981A (en) 1991-01-17 1998-03-31 Highwaymaster Communications, Inc. Method and apparatus for call delivery to a mobile unit
US5832394A (en) 1991-01-17 1998-11-03 Highway Master Communications, Inc. Vehicle locating and communicating method and apparatus
US5513111A (en) 1991-01-17 1996-04-30 Highway Master Communications, Inc. Vehicle locating and communicating method and apparatus
US5396539A (en) 1991-03-25 1995-03-07 Novatel Communications, Ltd. Cellular data overlay system for storing data identifying selected data allocated channels
US5506888A (en) 1991-03-29 1996-04-09 Telefonaktiebolaget L M Ericsson Auxillary communication service routing
US5119403A (en) 1991-04-09 1992-06-02 Racal Data Communications Inc. Superframes
EP0512789A2 (en) 1991-05-09 1992-11-11 Navsys Corporation Vehicle tracking system employing global positioning system (GPS) satellites
US5448622A (en) 1991-07-08 1995-09-05 Nokia Mobile Phones Ltd. Cellular telephone with plural telephone numbers
US5347272A (en) 1991-09-13 1994-09-13 Fuji Xerox Co., Ltd. System for determining communication routes in a network
US5208446A (en) 1991-09-19 1993-05-04 Martinez Jerry R Method and apparatus for validating credit information during home delivery of order
US5390216A (en) 1991-11-02 1995-02-14 Robert Bosch Gmbh Synchronization method for a mobile radiotelephone
EP0545753A1 (en) 1991-11-11 1993-06-09 Sumitomo Metal Industries, Ltd. Duplex stainless steel having improved strength and corrosion resistance
US5379224A (en) 1991-11-29 1995-01-03 Navsys Corporation GPS tracking system
EP0545783A1 (fr) 1991-11-29 1993-06-09 Societe D'applications Generales D'electricite Et De Mecanique Sagem Modem semi-duplex pour réseau de radiotéléphones GSM
US6266008B1 (en) 1991-12-10 2001-07-24 Charles D. Huston System and method for determining freight container locations
US6477633B1 (en) 1991-12-14 2002-11-05 Nokia Mobile Phones Limited Apparatus with menu-selected functions
US5946611A (en) 1991-12-26 1999-08-31 Sycord Limited Partnership Cellular telephone system that uses position of a mobile unit to make call management decisions
USRE35916E (en) 1991-12-26 1998-10-06 Dennison; Everett Cellular telephone system that uses position of a mobile unit to make call management decisions
US5235633A (en) 1991-12-26 1993-08-10 Everett Dennison Cellular telephone system that uses position of a mobile unit to make call management decisions
US5546445A (en) 1991-12-26 1996-08-13 Dennison; Everett Cellular telephone system that uses position of a mobile unit to make call management decisions
US5539810A (en) 1992-01-27 1996-07-23 Highwaymaster Communications, Inc. Data messaging in a communications network
US5771455A (en) 1992-01-27 1998-06-23 Highwaymaster Communications, Inc. Data messaging in a communications network using a feature request
US5544225A (en) 1992-01-27 1996-08-06 Highwaymaster Communications, Inc. Data messaging in a cellular communications network
US5334974A (en) 1992-02-06 1994-08-02 Simms James R Personal security system
US5203012A (en) 1992-02-10 1993-04-13 Motorola, Inc. Method and apparatus for optimum channel assignment
US5414432A (en) 1992-03-04 1995-05-09 Motorola, Inc. Position locating transceiver
US5245634A (en) 1992-03-23 1993-09-14 Motorola, Inc. Base-site synchronization in a communication system
US5282204A (en) 1992-04-13 1994-01-25 Racotek, Inc. Apparatus and method for overlaying data on trunked radio
US5223844B1 (en) 1992-04-17 2000-01-25 Auto Trac Inc Vehicle tracking and security system
US5223844A (en) 1992-04-17 1993-06-29 Auto-Trac, Inc. Vehicle tracking and security system
US5410541A (en) 1992-05-04 1995-04-25 Ivon International, Inc. System for simultaneous analog and digital communications over an analog channel
US5396653A (en) 1992-06-05 1995-03-07 Nokia Mobile Phones Ltd. Cellular telephone signalling circuit operable with different cellular telephone systems
EP0580397A2 (en) 1992-07-23 1994-01-26 Workspace Technologies Limited Conferencing apparatus
US5475868A (en) 1992-08-04 1995-12-12 U.S. Philips Corporation Cellular radio system having channel evaluation and optimal channel selection via trial use of non-assigned channels
US5537458A (en) 1992-08-17 1996-07-16 Nokia Telecommunications Oy Facsimile transmission in a digital cellular radio network
US5289372A (en) 1992-08-18 1994-02-22 Loral Aerospace Corp. Global equipment tracking system
US5408684A (en) 1992-09-21 1995-04-18 Ntt Mobile Communications Network, Inc. Control channel selecting method for mobile stations
US5410739A (en) 1992-09-29 1995-04-25 The Titan Corporation Variable data message communication over voice communication channel
US5418537A (en) 1992-11-18 1995-05-23 Trimble Navigation, Ltd. Location of missing vehicles
US5726893A (en) 1992-12-17 1998-03-10 Stanford Telecommunications, Inc. Cellular telephone with voice-in-data modem
US5365450A (en) 1992-12-17 1994-11-15 Stanford Telecommunications, Inc. Hybrid GPS/data line unit for rapid, precise, and robust position determination
US5761292A (en) 1993-01-04 1998-06-02 Intel Corporation Simultaneous transfer of control information with voice and data over a public switched telephone network line
US5333175A (en) 1993-01-28 1994-07-26 Bell Communications Research, Inc. Method and apparatus for dynamic power control in TDMA portable radio systems
US5331635A (en) 1993-02-12 1994-07-19 Fuji Xerox Co., Ltd. Network system having function of updating routing information
US5587715A (en) 1993-03-19 1996-12-24 Gps Mobile, Inc. Method and apparatus for tracking a moving object
US6169497B1 (en) 1993-04-01 2001-01-02 Bruno G. Robert Mobile tracking and positioning system
US5420592A (en) 1993-04-05 1995-05-30 Radix Technologies, Inc. Separated GPS sensor and processing system for remote GPS sensing and centralized ground station processing for remote mobile position and velocity determinations
US5509035A (en) 1993-04-14 1996-04-16 Qualcomm Incorporated Mobile station operating in an analog mode and for subsequent handoff to another system
US5510797A (en) 1993-04-15 1996-04-23 Trimble Navigation Limited Provision of SPS timing signals
US5428636A (en) 1993-05-03 1995-06-27 Norand Corporation Radio frequency local area network
US5388247A (en) 1993-05-14 1995-02-07 Digital Equipment Corporation History buffer control to reduce unnecessary allocations in a memory stream buffer
US5673305A (en) 1993-05-14 1997-09-30 Worldwide Notification Systems, Inc. Apparatus and method for tracking and reporting the location of a motor vehicle
US5530701A (en) 1993-06-07 1996-06-25 Radio Local Area Networks, Inc. Network link controller
US5551066A (en) 1993-06-07 1996-08-27 Radio Local Area Networks, Inc. Network link controller for dynamic designation of master nodes
US5621388A (en) 1993-06-10 1997-04-15 Sherburne; Glenn M. System for monitoring and locating a person within a preselected distance from a base-station
US5389934A (en) 1993-06-21 1995-02-14 The Business Edge Group, Inc. Portable locating system
US5901179A (en) 1993-06-25 1999-05-04 Matsushita Electric Industrial Co., Ltd. Waveform shaping method and equipment
US5475864A (en) 1993-07-19 1995-12-12 Nec Corporation High-cross correlation dynamic channel assignment for sectorized cells
US5363375A (en) 1993-07-30 1994-11-08 Bell Communications Research, Inc. Method and apparatus for synchronizing timing among radio ports in wireless communications systems using hierarchical scheme
US5363376A (en) 1993-07-30 1994-11-08 Bell Communications Research, Inc. Method and apparatus for synchronizing timing among radio ports in wireless communications systems
US5491690A (en) 1993-07-30 1996-02-13 International Business Machines Corporation Method and apparatus to speed up the path selection in a packet switching network
US5479482A (en) 1993-08-30 1995-12-26 At&T Corp. Cellular terminal for providing public emergency call location information
US5388147A (en) 1993-08-30 1995-02-07 At&T Corp. Cellular telecommunication switching system for providing public emergency call location information
US5687216A (en) 1993-08-31 1997-11-11 Ericsson Inc. Apparatus for storing messages in a cellular mobile terminal
US5497149A (en) 1993-09-02 1996-03-05 Fast; Ray Global security system
US5438337A (en) 1993-09-24 1995-08-01 Northrop Grumman Corporation Navigation system using re-transmitted GPS
US5440491A (en) 1993-10-19 1995-08-08 Kabushiki Kaisha Toshiba Pseudo GPS signal transmitting system in a base station
US5544222A (en) 1993-11-12 1996-08-06 Pacific Communication Sciences, Inc. Cellular digtial packet data mobile data base station
US5761204A (en) 1993-11-15 1998-06-02 Qualcomm Incorporated Method and apparatus of providing time sensitive messages over a variable delay channel
US5557254A (en) 1993-11-16 1996-09-17 Mobile Security Communications, Inc. Programmable vehicle monitoring and security system having multiple access verification devices
US5519403A (en) 1993-11-29 1996-05-21 Motorola, Inc. Global positioning system communications multi-interface
US5555520A (en) 1993-12-03 1996-09-10 Kabushiki Kaisha Toshiba Trench capacitor cells for a dram having single monocrystalline capacitor electrode
US6181253B1 (en) 1993-12-21 2001-01-30 Trimble Navigation Limited Flexible monitoring of location and motion
US5892454A (en) 1993-12-21 1999-04-06 Trimble Navigation Ltd. Hybrid monitoring of location of a site confinee
US5752195A (en) 1993-12-30 1998-05-12 Northern Telecom Limited Cordless telephone terminal
US5479480A (en) 1993-12-30 1995-12-26 At&T Corp. Dual mode cellular modem
US5555286A (en) 1994-01-31 1996-09-10 Tendler Technologies, Inc. Cellular phone based automatic emergency vessel/vehicle location system
US5459469A (en) 1994-02-04 1995-10-17 Stanford Telecommunications, Inc. Air traffic surveillance and communication system
WO1995021511A1 (en) 1994-02-07 1995-08-10 Harold Ii Pace Mobile location reporting apparatus and methods
US5712899A (en) 1994-02-07 1998-01-27 Pace, Ii; Harold Mobile location reporting apparatus and methods
US5422816A (en) 1994-02-22 1995-06-06 Trimble Navigation Limited Portable personal navigation tracking system
US5483549A (en) 1994-03-04 1996-01-09 Stanford Telecommunications, Inc. Receiver having for charge-coupled-device based receiver signal processing
US5841842A (en) 1994-03-11 1998-11-24 U.S. Robotics Access Corp. Telephone call routing and switching techniques for data communications
US5794124A (en) 1994-03-11 1998-08-11 Ntt Mobile Communications Network Inc. Time diversity communications system
US5381129A (en) 1994-03-23 1995-01-10 Radio Systems, Inc. Wireless pet containment system
US5450130A (en) 1994-03-30 1995-09-12 Radius Inc. Method and system for cell based image data compression
US5625668A (en) 1994-04-12 1997-04-29 Trimble Navigation Limited Position reporting cellular telephone
US5590396A (en) 1994-04-20 1996-12-31 Ericsson Inc. Method and apparatus for a deep-sleep mode in a digital cellular communication system
US5504491A (en) 1994-04-25 1996-04-02 Chapman; Robert W. Global status and position reporting system
US5680439A (en) 1994-04-29 1997-10-21 Alcatel N.V. Fixed cellular technical with a distinctive dial tone to indicate an emergency call is being placed
US5461390A (en) 1994-05-27 1995-10-24 At&T Ipm Corp. Locator device useful for house arrest and stalker detection
GB2290005A (en) 1994-05-28 1995-12-06 Motorola Ltd Communications system
US6021163A (en) 1994-06-15 2000-02-01 Fujitsu Limited Inter-unit digital signal transmitting method, digital signal transmitter and receiver equipment, digital signal transmitter, and digital signal receiver
US5543789A (en) 1994-06-24 1996-08-06 Shields Enterprises, Inc. Computerized navigation system
DE4424412A1 (de) 1994-07-12 1996-01-18 Esg Elektroniksystem Und Logis Funktelekommunikationssystem mit Satelliten-Navigation
US5619684A (en) 1994-07-25 1997-04-08 International Business Machines Corporation Method and apparatus for consistent user interface in a multiple application personal communications device
US5550551A (en) 1994-07-25 1996-08-27 At&T Corp. Position monitoring system and method
US6038310A (en) 1994-08-01 2000-03-14 British Telecommunications Public Limited Company Service node for a telephony network
US5630206A (en) 1994-08-11 1997-05-13 Stanford Telecommunications, Inc. Position enhanced cellular telephone system
US5515043A (en) 1994-08-17 1996-05-07 Berard; Alfredo J. Cellular/GPS system for vehicle tracking
WO1996007110A1 (en) 1994-09-01 1996-03-07 British Telecommunications Public Limited Company Navigation information system
US5565858A (en) 1994-09-14 1996-10-15 Northrop Grumman Corporation Electronic inventory system for stacked containers
US5732326A (en) 1994-09-30 1998-03-24 Fujitsu Limited Information guiding system and method of preventing borrower of portable terminal unit from forgetting to return it
US6121922A (en) 1994-10-12 2000-09-19 Veridian Erim International, Inc. Tracking system using miniaturized concealable communications module
US5566173A (en) 1994-10-12 1996-10-15 Steinbrecher Corporation Communication system
US5650770A (en) 1994-10-27 1997-07-22 Schlager; Dan Self-locating remote monitoring systems
US5754554A (en) 1994-10-28 1998-05-19 Nec Corporation Telephone apparatus for multiplexing digital speech samples and data signals using variable rate speech coding
US6075458A (en) 1994-10-31 2000-06-13 Peoplenet, Inc. Locator device
US5594425A (en) 1994-10-31 1997-01-14 Peoplenet, Inc. Locator device
US5786789A (en) 1994-11-14 1998-07-28 Trimble Navigation Limited GPS and cellphone unit having add-on modules
US6269392B1 (en) 1994-11-15 2001-07-31 Christian Cotichini Method and apparatus to monitor and locate an electronic device using a secured intelligent agent
US6300863B1 (en) 1994-11-15 2001-10-09 Absolute Software Corporation Method and apparatus to monitor and locate an electronic device using a secured intelligent agent via a global network
WO1996015636A1 (en) 1994-11-16 1996-05-23 Highwaymaster Communications, Inc. Locating system and method using a mobile communications network
US5913170A (en) 1994-11-16 1999-06-15 Highwaymaster Communications, Inc. Locating system and method using a mobile communications network
US5576716A (en) 1994-12-07 1996-11-19 Sadler; Kermit M. Owner oriented system for locating lost or stolen property
US6226529B1 (en) 1994-12-08 2001-05-01 Itt Manufacturing Enterprises, Inc. System for providing a simultaneous data and voice channel within a single channel of a portable cellular telephone to provide position-enhanced cellular services (PECS)
WO1996018275A1 (en) 1994-12-08 1996-06-13 Stanford Telecommunications, Inc. System for providing simultaneous data and voice communication
US5711013A (en) 1995-01-18 1998-01-20 Cycomm Corporation Conformant compact portable cellular phone case system and connector
US5953694A (en) 1995-01-19 1999-09-14 Siemens Aktiengesellschaft Method for transmitting items of speech information
US6009325A (en) 1995-02-01 1999-12-28 Motorola, Inc. Method of and apparatus for operating a cellular phone in one of two modes
US6275990B1 (en) 1995-02-06 2001-08-14 Adc Telecommunications, Inc. Transport of payload information and control messages on multiple orthogonal carriers spread throughout substantially all of a frequency bandwith
US5724243A (en) 1995-02-10 1998-03-03 Highwaymaster Communications, Inc. Method and apparatus for determining expected time of arrival
US5930722A (en) 1995-03-07 1999-07-27 Hyundai Electronics Industries Co. Ltd. Digital mobile communication system and timing design method between various subsystems
US5797091A (en) 1995-03-07 1998-08-18 Xypoint Corporation Personal communication system and method of use
US20080266064A1 (en) 1995-03-20 2008-10-30 Curran John W Apparatus and method for synchronizing visual/audible alarm units in an alarm system
US5666357A (en) 1995-03-23 1997-09-09 Hughes Electronics DTMF tone passer in a voice communication system
US5812522A (en) 1995-03-31 1998-09-22 Airtouch Communications, Inc. Location-ruled radio-integrated network
US6049971A (en) 1995-03-31 2000-04-18 Sgs-Thomson Microelectronics S.A. Casing for integrated circuit chips and method of fabrication
US5751246A (en) 1995-04-04 1998-05-12 Itt Industries, Inc. Accountability and theft protection via the global positioning system
US5572204A (en) 1995-04-10 1996-11-05 Ford Motor Company Vehicular emergency message system
US5687215A (en) 1995-04-10 1997-11-11 Ford Motor Company Vehicular emergency message system
US5686910A (en) 1995-04-10 1997-11-11 Ford Motor Company Vehicular emergency message system with automatic periodic call-in
US5691980A (en) 1995-06-07 1997-11-25 General Electric Company Local communication network for power reduction and enhanced reliability in a multiple node tracking system
US6057756A (en) 1995-06-07 2000-05-02 Engellenner; Thomas J. Electronic locating systems
US5752186A (en) 1995-06-07 1998-05-12 Jeman Technologies, Inc. Access free wireless telephony fulfillment service system
US5917449A (en) 1995-06-07 1999-06-29 Sanconix Inc. Enhanced position calculation
US5870675A (en) 1995-06-09 1999-02-09 Nokia Mobile Phones, Ltd. Method for improving handover
US5752193A (en) 1995-09-01 1998-05-12 Motorola, Inc. Method and apparatus for communicating in a wireless communication system
US5890108A (en) 1995-09-13 1999-03-30 Voxware, Inc. Low bit-rate speech coding system and method using voicing probability determination
US5781156A (en) 1995-10-09 1998-07-14 Snaptrack, Inc. GPS receiver and method for processing GPS signals
US6131067A (en) 1995-10-09 2000-10-10 Snaptrack, Inc. Client-server based remote locator device
US5663734A (en) 1995-10-09 1997-09-02 Precision Tracking, Inc. GPS receiver and method for processing GPS signals
US5874914A (en) 1995-10-09 1999-02-23 Snaptrack, Inc. GPS receiver utilizing a communication link
US5805576A (en) 1995-10-18 1998-09-08 Cellular Telecom, Ltd. Method and apparatus for TDMA wireless communication employing collector arrays for range extension
US5627517A (en) 1995-11-01 1997-05-06 Xerox Corporation Decentralized tracking and routing system wherein packages are associated with active tags
US5991279A (en) 1995-12-07 1999-11-23 Vistar Telecommunications Inc. Wireless packet data distributed communications system
US5826188A (en) 1995-12-07 1998-10-20 Motorola, Inc. Method and apparatus for handing off calls between differing radio telecommunication networks
US5937355A (en) 1995-12-07 1999-08-10 Telefonaktiebolaget Lm Ericsson (Publ) Emergency call handling in a cellular telecommunication system
US6041124A (en) 1995-12-19 2000-03-21 Sony Corporation Radio communication system and method and mobile communication terminal device
US5835907A (en) 1995-12-20 1998-11-10 Mci Communications Corporation Emergency PCS system for identification and notification of a subscriber's location
US5918180A (en) 1995-12-22 1999-06-29 Dimino; Michael Telephone operable global tracking system for vehicles
US5842141A (en) 1996-01-01 1998-11-24 Nokia Mobile Phones Limited Mobile terminal having user-actuated pager mode
US5960363A (en) 1996-01-24 1999-09-28 Sony Corporation Tone generating apparatus for a cellular telephone to simulate tones normally sensed by a user of a land-line telephone
US5778024A (en) * 1996-02-01 1998-07-07 Qualcomm Incorporated Dual-mode communications processor
US5912886A (en) 1996-02-09 1999-06-15 Nec Corporation Digital mobile communication system capable of establishing mutual synchronization among a plurality of radio base stations
US5825327A (en) 1996-03-08 1998-10-20 Snaptrack, Inc. GPS receivers and garments containing GPS receivers and methods for using these GPS receivers
US5831574A (en) 1996-03-08 1998-11-03 Snaptrack, Inc. Method and apparatus for determining the location of an object which may have an obstructed view of the sky
US5841396A (en) 1996-03-08 1998-11-24 Snaptrack, Inc. GPS receiver utilizing a communication link
US6133874A (en) 1996-03-08 2000-10-17 Snaptrack, Inc. Method and apparatus for acquiring satellite positioning system signals
US6002363A (en) 1996-03-08 1999-12-14 Snaptrack, Inc. Combined GPS positioning system and communications system utilizing shared circuitry
US5748083A (en) 1996-03-11 1998-05-05 Security Solutions Plus Computer asset protection apparatus and method
US5815114A (en) 1996-04-05 1998-09-29 Discovision Associates Positioning system and method
US5850392A (en) 1996-04-10 1998-12-15 Ericsson Inc. Spread spectrum random access systems and methods for time division multiple access radiotelephone communication systems
US6173194B1 (en) 1996-04-15 2001-01-09 Nokia Mobile Phones Limited Mobile terminal having improved user interface
US5712619A (en) 1996-04-18 1998-01-27 Simkin; Alan C. Global positioning system personal alarm
US5637355A (en) 1996-04-22 1997-06-10 Rmt, Inc. Method of nonhazardous removal of paint containing heavy metals and coating preparation for performing the same
US6009338A (en) 1996-04-26 1999-12-28 Mitsubishi Denki Kabushiki Kaisha Mobile information terminal equipment and portable electronic apparatus
US5864578A (en) 1996-04-29 1999-01-26 Golden Bridge Technology, Inc. Matched filter-based handoff method and apparatus
US6067457A (en) 1996-04-30 2000-05-23 Motorola, Inc. Method for dynamically assigning priority to a call
US5838237A (en) 1996-05-22 1998-11-17 Revell; Graeme Charles Personal alarm device
US5703598A (en) 1996-05-24 1997-12-30 Emmons; Ardath H. Method and system for tracking stolen property
US5804810A (en) 1996-06-26 1998-09-08 Par Government Systems Corporation Communicating with electronic tags
US5774876A (en) 1996-06-26 1998-06-30 Par Government Systems Corporation Managing assets with active electronic tags
US5892441A (en) 1996-06-26 1999-04-06 Par Government Systems Corporation Sensing with active electronic tags
US5825283A (en) 1996-07-03 1998-10-20 Camhi; Elie System for the security and auditing of persons and property
US5784422A (en) 1996-08-05 1998-07-21 Transcrypt International, Inc. Apparatus and method for accurate synchronization with inbound data packets at relatively low sampling rates
US5999126A (en) 1996-08-06 1999-12-07 Sony Corporation Position measuring apparatus, position measuring method, navigation apparatus, navigation method, information service method, automotive vehicle, and audio information transmitting and receiving method
US5731757A (en) 1996-08-19 1998-03-24 Pro Tech Monitoring, Inc. Portable tracking apparatus for continuous position determination of criminal offenders and victims
US5881373A (en) 1996-08-28 1999-03-09 Telefonaktiebolaget Lm Ericsson Muting a microphone in radiocommunication systems
US5884214A (en) 1996-09-06 1999-03-16 Snaptrack, Inc. GPS receiver and method for processing GPS signals
US6014376A (en) 1996-09-18 2000-01-11 Motorola, Inc. Method for over-the-air synchronization adjustment in a communication system
US6069570A (en) 1996-09-20 2000-05-30 Atx Technologies, Inc. Asset location system
US5864763A (en) 1996-09-24 1999-01-26 Qualcomm Inc Digital wireless telephone system interface for analog telecommunications equipment
US5961608A (en) 1996-10-04 1999-10-05 Sony Corporation Modem and communications control selection
US5790842A (en) 1996-10-11 1998-08-04 Divicom, Inc. Processing system with simultaneous utilization of multiple clock signals
US5963130A (en) 1996-10-28 1999-10-05 Zoltar Satellite Alarm Systems, Inc. Self-locating remote monitoring systems
US6014089A (en) 1996-10-28 2000-01-11 Tracy Corporation Ii Method for transmitting data using a digital control channel of a wireless network
US6018654A (en) 1996-10-29 2000-01-25 Ericsson Inc Method and apparatus for downloading tones to mobile terminals
US5978676A (en) 1996-11-15 1999-11-02 Telefonaktiebolaget L/M Ericsson (Publ) Inband signal converter, and associated method, for a digital communication system
US5771001A (en) 1996-11-18 1998-06-23 Cobb; Marlon J. Personal alarm system
US5748084A (en) 1996-11-18 1998-05-05 Isikoff; Jeremy M. Device security system
US5856986A (en) 1996-11-25 1999-01-05 Texas Instruments Incorporated Synchronization field pattern selection
US6011973A (en) 1996-12-05 2000-01-04 Ericsson Inc. Method and apparatus for restricting operation of cellular telephones to well delineated geographical areas
US5911129A (en) 1996-12-13 1999-06-08 Intel Corporation Audio font used for capture and rendering
EP0896442A1 (en) 1996-12-26 1999-02-10 Ntt Mobile Communications Network Inc. Frame transmitter-receiver
US6097760A (en) 1996-12-27 2000-08-01 Roke Manor Research Limited Data communications system
US6122514A (en) 1997-01-03 2000-09-19 Cellport Systems, Inc. Communications channel selection
US5946304A (en) 1997-01-08 1999-08-31 Paradyne Corporation Method and apparatus for controlling the operation of a modem capable of transmitting and receiving both voice and data signals
US5796808A (en) 1997-01-09 1998-08-18 Paradyne Corporation System and method for automatically selecting the mode of communication between a plurality of modems
US5742233A (en) 1997-01-21 1998-04-21 Hoffman Resources, Llc Personal security and tracking system
US5940598A (en) 1997-01-28 1999-08-17 Bell Atlantic Network Services, Inc. Telecommunications network to internetwork universal server
WO1998034359A1 (en) 1997-01-31 1998-08-06 Telefonaktiebolaget Lm Ericsson Air frame synchronisation
US6031489A (en) 1997-02-01 2000-02-29 Ico Services Ltd. User terminal positioning system and method employing external signals
US5812087A (en) 1997-02-03 1998-09-22 Snaptrack, Inc. Method and apparatus for satellite positioning system based time measurement
WO1998034164A1 (en) 1997-02-03 1998-08-06 Snaptrack, Inc. Method and apparatus for satellite positioning system based time measurement
US6055434A (en) 1997-02-11 2000-04-25 Ericsson Inc. Method and system for locating a mobile station within a mobile telecommunications network
US6470046B1 (en) 1997-02-26 2002-10-22 Paradyne Corporation Apparatus and method for a combined DSL and voice system
US5970130A (en) 1997-02-26 1999-10-19 Dynamic Telcom Engineering, L.L.C. Independent central office which provides local and long distance calling services to new residential and commercial developments
US5933468A (en) 1997-03-06 1999-08-03 Telefonaktiebolaget L M Ericsson (Publ) Continuous synchronization adjustment in a telecommunications system
US6304637B1 (en) 1997-03-14 2001-10-16 Itxc, Inc. Method and apparatus for establishing and facilitating a direct quality voice call to a telephone extension on behalf of a client computer
US6175307B1 (en) 1997-03-18 2001-01-16 Digital Security Controls Ltd. Security system with audible link and two-way communication
US6195736B1 (en) 1997-04-04 2001-02-27 International Business Machines Corporation Method for paging software wavetable synthesis samples
US6131366A (en) 1997-04-09 2000-10-17 Ishida Co., Ltd. Packaging machine with mechanisms for positioning its former
US5886634A (en) 1997-05-05 1999-03-23 Electronic Data Systems Corporation Item removal system and method
WO1998053573A2 (en) 1997-05-19 1998-11-26 Integrated Data Communications, Inc. System and method to communicate time stamped, 3-axis geo-position data within telecommunication networks
US20100197322A1 (en) 1997-05-19 2010-08-05 Airbiquity Inc Method for in-band signaling of data over digital wireless telecommunications networks
US20020097706A1 (en) 1997-05-19 2002-07-25 Preston Dan A. In-band signaling for data communications over digital wireless telecommunications networks
US7317696B2 (en) 1997-05-19 2008-01-08 Airbiquity Inc. Method for in-band signaling of data over digital wireless telecommunications networks
US6493338B1 (en) 1997-05-19 2002-12-10 Airbiquity Inc. Multichannel in-band signaling for data communications over digital wireless telecommunications networks
US6144336A (en) 1997-05-19 2000-11-07 Integrated Data Communications, Inc. System and method to communicate time stamped, 3-axis geo-position data within telecommunication networks
US7164662B2 (en) 1997-05-19 2007-01-16 Airbiquity, Inc. Network delay identification method and apparatus
US7151768B2 (en) 1997-05-19 2006-12-19 Airbiquity, Inc. In-band signaling for data communications over digital wireless telecommunications networks
US7206305B2 (en) 1997-05-19 2007-04-17 Airbiquity, Inc. Software code for improved in-band signaling for data communications over digital wireless telecommunications networks
US7747281B2 (en) 1997-05-19 2010-06-29 Airbiquity Inc. Method for in-band signaling of data over digital wireless telecommunications networks
US6690681B1 (en) 1997-05-19 2004-02-10 Airbiquity Inc. In-band signaling for data communications over digital wireless telecommunications network
US7221669B2 (en) 1997-05-19 2007-05-22 Airbiquity, Inc. Cellular telephone having improved in-band signaling for data communications over digital wireless telecommunications networks
USD395250S (en) 1997-05-29 1998-06-16 Garmin Corporation Combined hand held communication receiver and GPS device
US6466582B2 (en) 1997-05-30 2002-10-15 Adtran, Inc. Arbitration mechanism for statistically multiplexed frame relay switching system
WO1998059257A1 (en) 1997-06-24 1998-12-30 Snaptrack, Inc. Highly parallel gps correlator system and method
WO1998059256A2 (en) 1997-06-25 1998-12-30 Navox Corporation Vehicle tracking and security system incorporating simultaneous voice and data communication
US6140956A (en) 1997-06-25 2000-10-31 Cellutrac, Inc. Vehicle tracking and security system incorporating simultaneous voice and data communication
US6320535B1 (en) 1997-06-25 2001-11-20 Navox Corporation Vehicle tracking and security system incorporating simultaneous voice and data communication
US6522265B1 (en) 1997-06-25 2003-02-18 Navox Corporation Vehicle tracking and security system incorporating simultaneous voice and data communication
EP0889610A2 (en) 1997-07-01 1999-01-07 Alcatel SPS synchronization method
US5930340A (en) 1997-07-07 1999-07-27 Advanced Micro Devices Device and method for isolating voice and data signals on a common carrier
US6122271A (en) 1997-07-07 2000-09-19 Motorola, Inc. Digital communication system with integral messaging and method therefor
US5963134A (en) 1997-07-24 1999-10-05 Checkpoint Systems, Inc. Inventory system using articles with RFID tags
US6707421B1 (en) 1997-08-19 2004-03-16 Siemens Vdo Automotive Corporation Driver information system
US6151493A (en) 1997-09-04 2000-11-21 Miyaken Co., Ltd. Device for prohibiting unauthorized use of electronic devices
US6301480B1 (en) 1997-09-05 2001-10-09 @Track Communications, Inc. System and method for communicating using a voice network and a data network
US6076099A (en) 1997-09-09 2000-06-13 Chen; Thomas C. H. Method for configurable intelligent-agent-based wireless communication system
WO1999014885A2 (en) 1997-09-18 1999-03-25 Nokia Mobile Phones Limited Time diversity in a tdma system
US6212207B1 (en) 1997-09-26 2001-04-03 3Com Corporation Robbed bit signal detection and compensation
US6006189A (en) 1997-10-10 1999-12-21 Nortel Networks Corporation Method and apparatus for storing and forwarding voice signals
US6295461B1 (en) 1997-11-03 2001-09-25 Intermec Ip Corp. Multi-mode radio frequency network system
US6272315B1 (en) 1997-12-03 2001-08-07 Northern Telecom Limited Mobile satellite system/terrestrial wireless system interworking techniques
US6081523A (en) 1997-12-05 2000-06-27 Advanced Micro Devices, Inc. Arrangement for transmitting packet data segments from a media access controller across multiple physical links
US6526026B1 (en) 1997-12-10 2003-02-25 Intel Corporation Digit transmission over wireless communication link
US5881069A (en) 1997-12-12 1999-03-09 Motorola, Inc. Method and apparatus for error correction processing in a radio communication device
US6208959B1 (en) 1997-12-15 2001-03-27 Telefonaktibolaget Lm Ericsson (Publ) Mapping of digital data symbols onto one or more formant frequencies for transmission over a coded voice channel
US6032037A (en) 1997-12-16 2000-02-29 Sur-Gard Security Systems Ltd. Alarm panel with cellular communications backup
US6359923B1 (en) 1997-12-18 2002-03-19 At&T Wireless Services, Inc. Highly bandwidth efficient communications
US6014090A (en) 1997-12-22 2000-01-11 At&T Corp. Method and apparatus for delivering local information to travelers
US6249227B1 (en) 1998-01-05 2001-06-19 Intermec Ip Corp. RFID integrated in electronic assets
US5936526A (en) 1998-01-13 1999-08-10 Micron Electronics, Inc. Apparatus for generating an alarm in a portable computer system
WO1999036795A1 (en) 1998-01-20 1999-07-22 Snaptrack, Inc. Reducing cross-interference in a combined gps receiver and communication system
US20090110033A1 (en) 1998-02-12 2009-04-30 Lot 41 Acquisition Foundation, Llc Multicarrier sub-layer for direct sequence channel and multiple-access coding
US7593449B2 (en) 1998-02-12 2009-09-22 Steve Shattil Multicarrier sub-layer for direct sequence channel and multiple-access coding
US6101395A (en) 1998-02-13 2000-08-08 Intel Corporation Method and apparatus for optimizing call setup traffic in a communications network with out-of-band call control signaling
US6038595A (en) 1998-03-02 2000-03-14 Emc Corporation Information/communication device for network based services and a system for use of information/communication based services
US6044257A (en) 1998-03-19 2000-03-28 American Secure Care, Llc Panic button phone
WO1999049677A1 (en) 1998-03-24 1999-09-30 Telefonaktiebolaget Lm Ericsson (Publ) Cellular simultaneous voice and data transmission including digital simultaneous voice and data (dsvd) modem
US5949335A (en) 1998-04-14 1999-09-07 Sensormatic Electronics Corporation RFID tagging system for network assets
US5999124A (en) 1998-04-22 1999-12-07 Snaptrack, Inc, Satellite positioning system augmentation with wireless communication signals
US6677894B2 (en) 1998-04-28 2004-01-13 Snaptrack, Inc Method and apparatus for providing location-based information via a computer network
WO1999056144A1 (en) 1998-04-28 1999-11-04 Snaptrack, Inc. Method and apparatus for providing location-based information via a computer network
WO1999056143A1 (en) 1998-04-28 1999-11-04 Snaptrack, Inc. Distributed satellite position system processing and application network
US7286522B2 (en) 1998-05-19 2007-10-23 Airbiquity, Inc. Synchronizer for use with improved in-band signaling for data communications over digital wireless telecommunications networks
US8068792B2 (en) 1998-05-19 2011-11-29 Airbiquity Inc. In-band signaling for data communications over digital wireless telecommunications networks
US20080056469A1 (en) 1998-05-19 2008-03-06 Airbiquity Inc. In-band signaling for data communications over digital wireless telecommunications networks
US6308060B2 (en) 1998-06-15 2001-10-23 @Track Communications, Inc. Method and apparatus for providing a communication path using a paging network
US6024142A (en) 1998-06-25 2000-02-15 Micron Communications, Inc. Communications system and method, fleet management system and method, and method of impeding theft of fuel
CA2242495A1 (en) 1998-07-06 2000-01-06 Northern Telecom Limited Data network node connection establishment
US6917449B2 (en) 1998-07-09 2005-07-12 Canon Kabushiki Kaisha Image processing apparatus and method of the same, and storage medium
US6836515B1 (en) 1998-07-24 2004-12-28 Hughes Electronics Corporation Multi-modulation radio communications
US6405033B1 (en) 1998-07-29 2002-06-11 Track Communications, Inc. System and method for routing a call using a communications network
US6304186B1 (en) 1998-08-12 2001-10-16 Michael C. Rabanne System for tracking possessions
US6070089A (en) 1998-08-21 2000-05-30 Motorola, Inc. Method and apparatus for control of vocoder bypass utilizing inband signaling
US6091969A (en) 1998-08-21 2000-07-18 Motorola, Inc. Method and apparatus for inband signaling control of vocoder bypass
WO2000011893A1 (en) 1998-08-21 2000-03-02 Motorola, Inc. Method and apparatus for control of vocoder bypass utilizing inband signaling
US6351495B1 (en) 1998-08-28 2002-02-26 Lucent Technologies Inc. Apparatus and method for conveying TTY signals over wireless telecommunication systems
US6434198B1 (en) 1998-08-28 2002-08-13 Lucent Technologies Inc. Method for conveying TTY signals over wireless communication systems
US6683855B1 (en) 1998-08-31 2004-01-27 Lucent Technologies Inc. Forward error correction for high speed optical transmission systems
US6067044A (en) 1998-09-21 2000-05-23 National Systems And Research Company Remote tracking and sensing system and method
US6940809B2 (en) 1998-09-22 2005-09-06 The Directv Group, Inc. System and method for transmitting data in frame format using an R-Rake retransmission technique with blind identification of data frames
US6778645B1 (en) 1998-10-30 2004-08-17 Intel Corporation Method and apparatus for coordinating a point to point data session from an existing voice telephone call
US6236652B1 (en) 1998-11-02 2001-05-22 Airbiquity Inc. Geo-spacial Internet protocol addressing
US6430176B1 (en) 1998-11-06 2002-08-06 Nortel Networks Limited Multimedia channel management through PSTN signaling
US6343217B1 (en) 1998-11-12 2002-01-29 Legerity, Inc. Digital cordless telephony with PCM coding
US6373842B1 (en) 1998-11-19 2002-04-16 Nortel Networks Limited Unidirectional streaming services in wireless systems
US20080025295A1 (en) 1998-11-20 2008-01-31 Elliott Isaac K Voice over data telecommunications network architecture
US6154658A (en) 1998-12-14 2000-11-28 Lockheed Martin Corporation Vehicle information and safety control system
US6690922B1 (en) 1998-12-23 2004-02-10 Honeywell International Inc. Radio frequency (RF) system loss compensation method using power measurement of pulsed RF source
US6282430B1 (en) 1999-01-01 2001-08-28 Motorola, Inc. Method for obtaining control information during a communication session in a radio communication system
US6771629B1 (en) 1999-01-15 2004-08-03 Airbiquity Inc. In-band signaling for synchronization in a voice communications network
US6529744B1 (en) 1999-01-26 2003-03-04 Telefonaktiebolaget Lm Ericsson Handling menu information
US6754265B1 (en) 1999-02-05 2004-06-22 Honeywell International Inc. VOCODER capable modulator/demodulator
US6747571B2 (en) 1999-03-08 2004-06-08 Comverge Technologies, Inc. Utility meter interface system
US6993362B1 (en) 1999-03-16 2006-01-31 Telefonaktiebolaget L M Ericsson (Publ) Portable communication apparatus having a hierarchical menu system and a dynamic menu
US6519260B1 (en) 1999-03-17 2003-02-11 Telefonaktiebolaget Lm Ericsson (Publ) Reduced delay priority for comfort noise
US6166688A (en) 1999-03-31 2000-12-26 International Business Machines Corporation Data processing system and method for disabling a portable computer outside an authorized area
US7701954B2 (en) 1999-04-13 2010-04-20 Broadcom Corporation Gateway with voice
US6611804B1 (en) 1999-06-15 2003-08-26 Telefonaktiebolaget Lm Ericsson (Publ) Universal TTY/TDD devices for robust text and data transmission via PSTN and cellular phone networks
US6345251B1 (en) 1999-06-15 2002-02-05 Telefonaktiebolaget Lm Ericsson (Publ) Low-rate speech coder for non-speech data transmission
US6321091B1 (en) 1999-07-29 2001-11-20 Bryan Holland Portable locator system and method
US6665333B2 (en) 1999-08-02 2003-12-16 Itt Manufacturing Enterprises, Inc. Methods and apparatus for determining the time of arrival of a signal
US6326736B1 (en) 1999-10-26 2001-12-04 Samsung Sdi Co., Ltd. Method for driving plasma display panel
US6300875B1 (en) 1999-11-22 2001-10-09 Mci Worldcom, Inc. Method and apparatus for high efficiency position information reporting
US6358145B1 (en) 1999-11-29 2002-03-19 Strottman International Broadcast sweepstakes game system and game piece device
US6307471B1 (en) 1999-12-01 2001-10-23 Ensure Technologies, Inc. Radio based proximity token with multiple antennas
US6614349B1 (en) 1999-12-03 2003-09-02 Airbiquity Inc. Facility and method for tracking physical assets
US6516198B1 (en) 1999-12-06 2003-02-04 Tendler Cellular Inc System for location reporting
US6288645B1 (en) 1999-12-21 2001-09-11 International Business Machines Corp. Electronic location tag
US7809367B2 (en) 1999-12-29 2010-10-05 Volvo Teknisk Utveckling Ab System and method for prioritized communication between a central station and remote objects
US6628967B1 (en) 1999-12-30 2003-09-30 Nortel Networks Limited Wireless communication device capable to transmit/receive TTY/TDD messages with variable data rate, embedded into audio data frames
US6362736B1 (en) 2000-01-04 2002-03-26 Lucent Technologies Inc. Method and apparatus for automatic recovery of a stolen object
US7606555B2 (en) 2000-02-04 2009-10-20 At&T Intellectual Property 1, L.P. Location information system for a wireless communication device and method therefor
JP2001238256A (ja) 2000-02-21 2001-08-31 Hitachi Kokusai Electric Inc 可変速度符号化システム
US6681121B1 (en) 2000-03-21 2004-01-20 Airbiquity Inc. Circuitry for activating a modem in a cellular telephone
WO2001078249A1 (en) 2000-04-11 2001-10-18 Airnet Communications Corporation Method and apparatus employing wireless in-band signaling for downlink transmission of commands
US7426466B2 (en) 2000-04-24 2008-09-16 Qualcomm Incorporated Method and apparatus for quantizing pitch, amplitude, phase and linear spectrum of voiced speech
US7372833B2 (en) 2000-05-10 2008-05-13 Nokia Corporation Resource allocation in packet network
US20050147057A1 (en) 2000-05-17 2005-07-07 Ladue Christoph K. Octave pulse data method & apparatus
US20060246910A1 (en) 2000-05-31 2006-11-02 Jerry Petermann Wireless devices for use with a wireless communications system with articial intelligence-based distributive call routing
WO2001099295A2 (en) 2000-06-22 2001-12-27 Airbiquity, Inc Inband signaling over digital wireless telecommunications networks
US6327533B1 (en) 2000-06-30 2001-12-04 Geospatial Technologies, Inc. Method and apparatus for continuously locating an object
US7103550B2 (en) 2000-06-30 2006-09-05 Mitel Networks Corporation Method of using speech recognition to initiate a wireless application protocol (WAP) session
US6617979B2 (en) 2000-08-04 2003-09-09 Matsushita Electric Industrial Co. Ltd. Emergency informing terminal, emergency informing system, and method for controlling emergency informing terminal
US20020022465A1 (en) 2000-08-15 2002-02-21 Mccullagh Michael J. Apparatus and method for integrated frequency hopping and GPS receiver
US7092370B2 (en) 2000-08-17 2006-08-15 Roamware, Inc. Method and system for wireless voice channel/data channel integration
US7512098B2 (en) 2000-08-17 2009-03-31 Roamware, Inc. Method and system for wireless voice channel/data channel integration
US6697987B2 (en) 2000-10-31 2004-02-24 Lg Electronics Inc. Method of packet data transfer with hybrid ARQ
WO2002054694A1 (en) 2001-01-02 2002-07-11 Airbiquity Inc. Facility and method for cellular data communication between hearing impaired users and emergency service centers
US6845153B2 (en) 2001-01-31 2005-01-18 Telefonaktiebolaget Lm Ericsson (Publ) Network independent party addressing using a unique identifier linked to network specific addresses
US20020111167A1 (en) 2001-02-13 2002-08-15 Telefonaktiebolaget Lm Ericsson (Publ). System and method of providing voice and data features in a time division multiple access (TDMA) network
US20020122401A1 (en) 2001-03-02 2002-09-05 Zeng-Jun Xiang System and method in a wireless telecommunication network for placing a voice call on hold and conducting a data session
US6799050B1 (en) 2001-06-04 2004-09-28 Snaptrack, Inc. Reducing cross-interference in a combined GPS receiver and communication system
US20030016639A1 (en) 2001-07-19 2003-01-23 Ericsson Inc. Telecommunications system and method for delivery of short message service messages to a mobile terminal in data mode
US7283904B2 (en) 2001-10-17 2007-10-16 Airbiquity, Inc. Multi-sensor fusion
WO2003034235A1 (en) 2001-10-17 2003-04-24 Infocus Corporation Dataconferencing method, appliance, and system
US7215965B2 (en) 2001-11-01 2007-05-08 Airbiquity Inc. Facility and method for wireless transmission of location data in a voice channel of a digital wireless telecommunications network
US7848763B2 (en) 2001-11-01 2010-12-07 Airbiquity Inc. Method for pulling geographic location data from a remote wireless telecommunications mobile unit
US6981022B2 (en) 2001-11-02 2005-12-27 Lucent Technologies Inc. Using PSTN to convey participant IP addresses for multimedia conferencing
US6700867B2 (en) 2001-12-20 2004-03-02 Motorola, Inc. Method and system for reduced memory hybrid automatic repeat request
WO2003081373A2 (en) 2002-03-21 2003-10-02 Nokia Corporation Service/device indication with graphical interface
US20030212562A1 (en) 2002-05-13 2003-11-13 General Motors Corporation Manual barge-in for server-based in-vehicle voice recognition systems
US7269188B2 (en) 2002-05-24 2007-09-11 Airbiquity, Inc. Simultaneous voice and data modem
US20030227939A1 (en) 2002-06-05 2003-12-11 Satoru Yukie Establishing a connection using a hybrid receiver
US20040034529A1 (en) 2002-08-14 2004-02-19 Hooper Howard Gaines Multifunction printer that converts and prints voice data
US7562393B2 (en) 2002-10-21 2009-07-14 Alcatel-Lucent Usa Inc. Mobility access gateway
US20060059261A1 (en) 2002-10-25 2006-03-16 Michael Finkenzeller Method and device for selecting network access to one or more data networks by means of a telecommunication terminal
US7653383B2 (en) 2003-02-28 2010-01-26 Motorola, Inc. Method and apparatus for remote data access in a mobile communication device
US7430428B2 (en) 2003-02-28 2008-09-30 Temic Automotive Of North America, Inc. Method for communicating teletype information in a vehicle communication system between a vehicle and a remote station
US20040192345A1 (en) 2003-03-24 2004-09-30 Osborn William R. Methods, systems and computer program products for providing location determination information to an assisted location service
US20050278169A1 (en) * 2003-04-01 2005-12-15 Hardwick John C Half-rate vocoder
US7206574B2 (en) 2003-04-17 2007-04-17 Lucent Technologies Inc. Automated exchange of broadband communication addresses over a non-broadband channel in a wireless telecommunication system
US20080107094A1 (en) 2003-05-31 2008-05-08 Michael Borella System and method for integrating call control and data network access components
US7398100B2 (en) 2003-07-01 2008-07-08 Motorola, Inc. Method, apparatus and system for use in controlling transmission power during wireless communication
US7583959B2 (en) 2003-07-07 2009-09-01 At&T Mobility Ii Llc One button access to network services from a remote control device
US20050111563A1 (en) 2003-11-20 2005-05-26 Hsu-Hsiang Tseng De-mapping method for wireless communications systems
US20050187882A1 (en) 2004-02-25 2005-08-25 Sampo Sovio Electronic payment schemes in a mobile environment for short-range transactions
US7477906B2 (en) 2004-02-27 2009-01-13 Research In Motion Limited Methods and apparatus for facilitating the determination of GPS location information for a mobile station without disrupting communications of a voice call
US20100211660A1 (en) 2004-03-10 2010-08-19 Nokia Corporation System and method for pushing content to a terminal utilizing a network-initiated data service technique
US20050207511A1 (en) 2004-03-17 2005-09-22 General Motors Corporation. Meethod and system for communicating data over a wireless communication system voice channel utilizing frame gaps
US20050215228A1 (en) 2004-03-26 2005-09-29 Comverse Ltd. Voice session data session interoperability in the telephony environment
US20050226202A1 (en) 2004-03-31 2005-10-13 Dan Zhang Enhanced voice pre-emption of active packet data service
US7483418B2 (en) 2004-05-10 2009-01-27 Dialog Semiconductor Gmbh Data and voice transmission within the same mobile phone call
US20080182570A1 (en) 2004-05-21 2008-07-31 Carmen Kuhl Device and Method For Automated Functionality-Based Selective Establishing of Wireless Data Communication Connections
US7856240B2 (en) 2004-06-07 2010-12-21 Clarity Technologies, Inc. Distributed sound enhancement
US7688260B2 (en) 2004-08-26 2010-03-30 Global Locate, Inc. Method and apparatus for locating position of a mobile device in an assisted satellite positioning system
US20050090225A1 (en) 2004-11-16 2005-04-28 Om2 Technology Inc. A Simplified Second Generation Enhanced Emergency Communications System SSGE-911
US7733853B2 (en) 2005-01-31 2010-06-08 Airbiquity, Inc. Voice channel control of wireless packet data communications
US7508810B2 (en) 2005-01-31 2009-03-24 Airbiquity Inc. Voice channel control of wireless packet data communications
US8036201B2 (en) 2005-01-31 2011-10-11 Airbiquity, Inc. Voice channel control of wireless packet data communications
US20080140394A1 (en) 2005-02-11 2008-06-12 Clyde Holmes Method and system for low bit rate voice encoding and decoding applicable for any reduced bandwidth requirements including wireless
US20060287003A1 (en) 2005-06-15 2006-12-21 Kamyar Moinzadeh Concomitant inband signaling for data communications over digital wireless telecommunications network
US20070087756A1 (en) 2005-10-04 2007-04-19 Hoffberg Steven M Multifactorial optimization system and method
US20070258398A1 (en) 2005-10-24 2007-11-08 General Motors Corporation Method for data communication via a voice channel of a wireless communication network
US20070124625A1 (en) 2005-11-30 2007-05-31 Microsoft Corporation Predicting degradation of a communication channel below a threshold based on data transmission errors
US20070155360A1 (en) 2005-12-30 2007-07-05 Yafan An Methods, Apparatuses and Systems for the Reporting of Roadway Speed and Incident Data and the Constructing of Speed Map Database
US20070211624A1 (en) 2006-03-07 2007-09-13 Infineon Technologies Ag Communication device, radio communication arrangement and method for transmitting information
EP1843503A2 (en) 2006-04-07 2007-10-10 Airbiquity Inc., Time diversity for data communication over a voice channel
US20070264964A1 (en) 2006-04-07 2007-11-15 Airbiquity, Inc. Time diversity voice channel data communications
US7924934B2 (en) 2006-04-07 2011-04-12 Airbiquity, Inc. Time diversity voice channel data communications
US7511611B2 (en) 2006-05-18 2009-03-31 Casella Waste Systems, Inc. Systems for and methods of asset management in a waste management service environment
US20080039017A1 (en) 2006-08-08 2008-02-14 Samsung Electronics Co., Ltd. Mobile communication terminal and method for inputting/outputting voice during playback of music data by using bluetooth
US20080132200A1 (en) 2006-11-02 2008-06-05 Denso Corporation In-vehicle emergency call apparatus
US20080143497A1 (en) 2006-12-15 2008-06-19 General Motors Corporation Vehicle Emergency Communication Mode Method and Apparatus
US7586240B2 (en) 2007-01-23 2009-09-08 Fujitsu Media Devices Limited Acoustic wave device
US20080212820A1 (en) 2007-03-02 2008-09-04 Samsung Electronics Co., Ltd. Audio signal output method and apparatus for short-range communication enabled headset
US20080294340A1 (en) 2007-05-22 2008-11-27 Infineon Technologies Ag Generic object exchange profile message
US20090055516A1 (en) 2007-08-24 2009-02-26 Victor Zhodzishsky Method and system for managing bluetooth communication using software or firmware filtering
US20090077407A1 (en) 2007-09-18 2009-03-19 Nec Corporation Apparatus, system and method for power management
US20090088180A1 (en) 2007-10-01 2009-04-02 James Lamance Computing geographical location of a mobile receiver using network measurement reports
US7979095B2 (en) 2007-10-20 2011-07-12 Airbiquity, Inc. Wireless in-band signaling with in-vehicle systems
US20110211625A1 (en) 2007-10-20 2011-09-01 Airbiquity Inc. Wireless in-band signaling with in-vehicle systems
US20090265173A1 (en) 2008-04-18 2009-10-22 General Motors Corporation Tone detection for signals sent through a vocoder
US20090298428A1 (en) 2008-05-30 2009-12-03 Samsung Electronics Co., Ltd Method of connecting multiple bluetooth profiles and bluetooth apparatus using the same
WO2009149356A2 (en) 2008-06-05 2009-12-10 Qualcomm Incorporated System and method of an in-band modem for data communications over digital wireless communication networks
TW201018163A (en) 2008-06-05 2010-05-01 Qualcomm Inc System and method of an in-band modem for data communications over digital wireless communication networks
US20090304057A1 (en) * 2008-06-05 2009-12-10 Qualcomm Incorporated System and method of an in-band modem for data communications over digital wireless communication networks
US20090306976A1 (en) * 2008-06-05 2009-12-10 Qualcomm Incorporated System and method of an in-band modem for data communications over digital wireless communication networks
US7983310B2 (en) 2008-09-15 2011-07-19 Airbiquity Inc. Methods for in-band signaling through enhanced variable-rate codecs
US20110287736A1 (en) 2008-09-15 2011-11-24 Airbiquity Inc. Methods for in-band signaling through enhanced variable-rate codecs
US8036600B2 (en) 2009-04-27 2011-10-11 Airbiquity, Inc. Using a bluetooth capable mobile phone to access a remote network
US20110312322A1 (en) 2009-04-27 2011-12-22 Airbiquity Inc. Using a bluetooth capable mobile phone to access a remote network
US20120040651A1 (en) 2009-04-27 2012-02-16 Airbiquity Inc. Automatic gain control in a navigation device

Non-Patent Citations (50)

* Cited by examiner, † Cited by third party
Title
"Tracking," published on the Internet at http://www.wisetrack.com/tracking.html, posted May 29, 2002, Copyright 2001 by TVL, Inc.
3GPP2 Access Network Interfaces Technical Specification Group, "3GGP2 Access Network Interfaces TSG (TSG-A) #60, Meeting Summary," Coeur d'Alene, Idaho, Apr. 19, 2004, pp. 1-5.
3rd Generation Partnership Project; Technical Specification Group Services and System Aspects Push Architecture (Rel. 6); 3GPP TR 23.976; vol. 3-SA2, No. V6.1.0; Jun. 1, 2004; pp. 1-34.
Ayanoglu, E., "Adaptive ARQ/FEC for Multitone Transmission in Wireless Networks" Global Telecommunications Conference, 1995. Conference Record. Communication Theory Mini-Conference, Globecom '95., IEEE Singapore Nov. 13-17, 1995, New York, NY, USA, IEEE, US Lnkd. vol. 3. Whole Document.
Benelli G., et al.: "A Coding and Retransmission Protocol for Mobile Radio Data Transmission." Vehicular Technology Conference, 1999. VTC 1999-Fall. IEEE VTS 50th Amsterdam Netherlands Sep. 19-22, 1999. Abstract Section II.
Bilbao, Alfonso, m-Security (Security and Mobile Telephony), Proceedings of the IEEE 35th Annual 2001, International Carnahan Conference on Security Technology, Oct. 16-19, 2001.
Brian W. Martin, "WatchIt: A Fully Supervised Identification, Location and Tracking System," Proceedings of the IEEE, 29th Annual 1995 International Carnahan Conference on Security Technology, Oct. 1995.
Brown, et al., "A Reconfigurable Modem for Increased Network . . . " IEEE Trans. on Circuits & Systems for Video Technology, vol. 6, No. 2, Apr. 1996, pp. 215-224.
Christ, Thomas W., "A Prison Guard Duress Alarm Location System," Proceedings of the IEEE 1993 International Carnahan Conference on Security Technology: Security Technology, Oct. 13-15, 1993, Copyright 1993 IEEE.
Coleman, A., et al., "Subjective Performance Evaluation of the RPE-LTP Codec for the Pan-European Cellular Digital Mobile Radio System," Globecom '89, IEEE Global Telecommunications Conference and Exhibition, vol. 2, Nov. 27-30, 1989, pp. 1075-1079, IEEE, New York, New York.
Coleman, A., et al., "Subjective Performance Evaluation of the RPE-LTP Codec for the Pan-European Cellular Digital Radio System," Globecom '89, IEEE Global Telecommunications Conference and Exhibition, vol. 2, Nov. 27-30, 1989, pp. 758-761, IEEE, New York, New York.
Digital Cellular Telecommunications System (Phase 2+); GSM 06.31 version 8.0.1 Release 1999. ETSI EN 300 964 V8.01 (Nov. 2000), pp. 1-13. European Standard (Telecommunications serier). (http://www.etsi.org).
FCC E911 Order, dated Nov. 23, 1998-Jul. 1, 1999.
Feher, "MODEMS for Emerging Digital Cellular-Mobile Radio System," IEEE Trans. on Vehicular Technology, vol. 40, No. 2, May 1991, pp. 355-365.
International Search Report for PCT/US06/03416, dated Feb. 5, 2007, 3 pages.
International Search Report of International Application No. PCT/US07/64443, dated Sep. 15, 2008.
International Search Report PCT/US00/01157; dated May 23, 2000; Applicant: Integrated Data Communications Inc.
International Search Report PCT/US00/13288; dated May 15, 2000; Applicant: Integrated Data Communications Inc.
International Search Report PCT/US01/19845; dated Jun. 22, 2001; Applicant: Airbiquity, Inc.
International Search Report PCT/US01/20021, dated Aug. 21, 2001; Applicant: Airbiquity, Inc.
International Search Report PCT/US01/27238; dated Aug. 30, 2001; Applicant: Airbiquity, Inc.
International Search Report PCT/US02/00996; dated Jun. 24, 2002; Applicant: Airbiquity, Inc.
Jain et al, Potential Networking Applications of Global Positioning Systems (GPS), downloadable at http://www.cis.ohio-state.edu/~jain/papers/gps.htm, pp. 1-40, Apr. 1996.
Jain et al, Potential Networking Applications of Global Positioning Systems (GPS), downloadable at http://www.cis.ohio-state.edu/˜jain/papers/gps.htm, pp. 1-40, Apr. 1996.
Janus Technologies, Inc., "ProxTrak Asset Tracking Interface," copyright 2000 Janus Technologies, Inc., published on the Internet at http://www.janus-tech.com/Products/ProxTrax. html, printed May 29, 2002.
Lavigne, R.E. and P. Eng, "Trunking Versus Conventional Radio System," Proceedings of the IEEE, 34th Annual 2000 International Carnahan Conference on Security Technology, Oct. 23-25, 2000.
Lemke A. C., et al.: "Voice Over Data and Data Over Voice: Evolution of the Alcatel 1000. Seamless Evolution of the Alcatel 1000 Switching System will Support the Move to Voice and Data Convergence." Electrical Communication, Alcatel. Brussels, BE, Apr. 1, 1999. Abstract; Figure 2.
Lin, D., et al., "Data Compression of Voiceband Modem Signals," 40th sup. th IEEE Vehicular Technology Conference: On the Move in the 90's. May 6-9, 1990, pp. 323-325, IEEE, New York, New York.
Lockwood Technology Corporation, "Asset Management," copyright 2002 by Lockwood Technology Corporation, published on the Internet at http://www.lockwoodtechnology.com/ asset-tracking.html, printed May 29, 2002.
McNichols, Shawn, "Keeping Your Assets Safe," published on the Internet at http://www.securitymagazine.com,CDA/ArticleInformation/features/BNP-Features, posted Feb. 14, 2002, Copyright 2001-2002 by Business News Publishing Co.
Mueller, A.J. et al., "A DSP Implemented dual 9600/7200 BPS TCM Modem for Mobile Communications Over FM Voice Radios," Proceedings of the 1997 6th IEEE Pacific rim Conference on Communications, Computers and Signal Processing, vol. 2, Aug. 20-22, 1997, pp. 758-761, IEEE, New York, New York.
Office Action in U.S. Appl. No. 09/625,159 dated Apr. 9, 2003; 15 pages.
Office Action in U.S. Appl. No. 09/677,486 dated Oct. 16, 2001; 9 pages.
PCT/US2009/056834 International Search Report dated Dec. 30, 2009; 12 pages.
Phifer, Lisa A., Surfing the Web Over Wireless, Jan. 1998, http://www.corecom.com/html/ wireless.html, printed May 22, 2007.
Protean Research Group, "Anycast Routing for Mobile Services (ARMS) Project Overview," Published on the Internet at . Downloaded from the internet Jan. 19, 2005.
Protean Research Group, "Anycast Routing for Mobile Services (ARMS) Project Overview," Published on the Internet at <http://tang.itd.nrl.navy.mll/5522/anycast/anycast—index.html>. Downloaded from the internet Jan. 19, 2005.
Reut, Anton B., "Remote Monitoring of Military Assets Using Commercial Leo Satellites," IEEE Universal Communications Conference Record, Nov. 6-8, 1995, Copyright 1995 IEEE.
Stolowitz Ford Cowger LLP List of Related Cases dated Dec. 23, 2011.
U.S. Appl. No. 60/047,034; dated May 19, 1997; Applicant: Preston.
U.S. Appl. No. 60/047,140; dated May 20, 1997; Applicant: Preston.
U.S. Appl. No. 60/048,369; dated Jun. 3, 1997; Applicant: Preston.
U.S. Appl. No. 60/048,385; dated Jun. 3, 1997; Applicant: Preston.
U.S. Appl. No. 60/055,497; dated Aug. 13, 1997; Applicant: Preston.
Universal Mobile Telecommunications System (UMTS); Push Architecture (3GPP TR 23.976 version 6.1.0 Release 6); Jun. 2004; 36 pages.
USPTO Search Authority; PCT/US08/80555 International Search Report; Dec. 19, 2008, 11 pages.
Vaha-Sipila, A., URLs for Telephone Calls, Request for Comments: 2806, Network Working Group, Apr. 2000, 16 pages.
Vocal Technologies, Ltd. Home Page, "Audio Codecs," http://www.vocal.com/data-sheets/audio-codecs.html?glad, accessed Jun. 12, 2005.
Werb, Jay and Colin Lanzl, "Designing a Positioning System for Finding Things and People Indoors," IEEE Spectrum, Sep. 1998.
Werb, Jay and Colin Lanzl, "The Next Generation of Control: Local Positioning," abstract, Feb. 1999, vol. 26.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8848825B2 (en) 2011-09-22 2014-09-30 Airbiquity Inc. Echo cancellation in wireless inband signaling modem
US20150172073A1 (en) * 2012-02-22 2015-06-18 Texas Instruments Incorporated Transmission of Segmented Frames in Power Line Communication
US9337958B2 (en) * 2014-02-21 2016-05-10 Sogics Corporation Limited Data transmissions over a voice channel
US20180352434A1 (en) * 2017-06-05 2018-12-06 Renesas Electronics Corporation Wireless communication system, beacon device, information processing terminal, and beacon device authentication method
US11973548B2 (en) 2022-02-03 2024-04-30 T-Mobile Usa, Inc. Adjusting a configuration of a wireless telecommunication network

Also Published As

Publication number Publication date
EP2504942B1 (en) 2014-11-26
JP5709887B2 (ja) 2015-04-30
BR112012009888A2 (pt) 2016-11-29
AU2010322322B2 (en) 2014-10-16
MX2012005702A (es) 2012-11-12
CN102792625A (zh) 2012-11-21
EP2504942A1 (en) 2012-10-03
CN102792625B (zh) 2015-06-17
AU2010322322A2 (en) 2012-08-23
KR20120101082A (ko) 2012-09-12
TW201129013A (en) 2011-08-16
WO2011062715A1 (en) 2011-05-26
JP2013511893A (ja) 2013-04-04
CA2778056A1 (en) 2011-05-26
AU2010322322A1 (en) 2012-05-03
TWI357741B (en) 2012-02-01
US20110125488A1 (en) 2011-05-26

Similar Documents

Publication Publication Date Title
US8249865B2 (en) Adaptive data transmission for a digital in-band modem operating over a voice channel
US8418039B2 (en) Efficient error correction scheme for data transmission in a wireless in-band signaling system
US7979095B2 (en) Wireless in-band signaling with in-vehicle systems
US8855100B2 (en) System and method for supporting higher-layer protocol messaging in an in-band modem
US7411941B2 (en) Text telephone modem communications over packet networks
US8743864B2 (en) System and method for supporting higher-layer protocol messaging in an in-band modem
NZ328537A (en) Data transmission over mobile radio voice channel without interference to speech transmitted on same channel
EP1592202A1 (en) Secure communication system and method

Legal Events

Date Code Title Description
AS Assignment

Owner name: AIRBIQUITY INC., WASHINGTON

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BIRMINGHAM, KILEY;REEL/FRAME:025134/0816

Effective date: 20101011

STCF Information on status: patent grant

Free format text: PATENTED CASE

AS Assignment

Owner name: ORIX VENTURES, LLC, NEW YORK

Free format text: SECURITY INTEREST;ASSIGNOR:AIRBIQUITY INC.;REEL/FRAME:033083/0036

Effective date: 20140523

AS Assignment

Owner name: SILICON VALLEY BANK, CALIFORNIA

Free format text: SECURITY INTEREST;ASSIGNOR:AIRBIQUITY INC.;REEL/FRAME:035364/0317

Effective date: 20150331

FPAY Fee payment

Year of fee payment: 4

AS Assignment

Owner name: AIRBIQUITY INC., WASHINGTON

Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:SILICON VALLEY BANK;REEL/FRAME:052341/0327

Effective date: 20200402

FEPP Fee payment procedure

Free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

LAPS Lapse for failure to pay maintenance fees

Free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

FP Lapsed due to failure to pay maintenance fee

Effective date: 20200821

AS Assignment

Owner name: KARMA AUTOMOTIVE, LLC, CALIFORNIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:AIRBIQUITY, INC.;REEL/FRAME:066977/0722

Effective date: 20240227